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      Resistance and Multimeters

      March 12, 2025  •  EPISODE 256

      How do we measure electricity? In this episode of Science LIVE, Roger Billings shows how multimeters work to measure voltage, resistance, and ohms. Learn why these tools are important and how they’re used in everyday technology.

      About DrB

      Dr. Roger Billings is a visionary innovator whose work has touched the lives of millions of students and transformed the landscape of education. Widely known as “DrB” to the countless kids who benefit from his groundbreaking Acellus learning system, Dr. Billings has dedicated his life to advancing education through technology. As part of DrB’s lifelong commitment to supporting education, Science LIVE was launched as a way to “give back” by mentoring students in conjunction with the Roger Billings Scholarship Program.


      Read more about DrB » 
      About the Roger Billings Scholarship Program »

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      305 Comments

      1. Alana Boyce

        I wasnt aware you could measure electricity! Thats so interesting.

        Reply
      2. Deion S

        I enjoy learning about electricity!!

        Reply
      3. Maya J

        Technology is so amazing!

        Reply
      4. Valentino Batson

        Learning about electricity is the coolest! Thanks

        Reply
      5. Claire Bradford

        I learned a lot today

        Reply
      6. Bridgette Opsahl

        These videos are so inspiring

        Reply
      7. Ethan

        What are some mistakes to avoid when measuring electricity?

        Reply
      8. Nola

        I love the science live always helps me learn something new!

        Reply
      9. Kayla Ferguson

        Electricity is so interesting!

        Reply
      10. Lily Ferguson

        The Pajet cardboard cutout makes me laugh!

        Reply
      11. Caleb Felker

        I always love Science Live! I have learned so much. Great video!

        Reply
      12. Grace Goddard

        Loved learning about electricty and currents! Learned a lot. Thank you!

        Reply
      13. Rivers Blackmon

        I learned a lot about electricity in this video. Also, way to go Charlie!

        Reply
      14. Arik Partridge

        R-51 is so funny!🤣 I love these videos!

        Reply
      15. Kadyn Dimmitt-Henslee

        Resistance and Multimeters – My mom said she learned more from this video than she did in school about electricity and currents. My mom is your biggest fan.

        Reply
      16. Kayla

        REDDDDDDD PLEASEEEE
        🥰

        Reply
      17. Victoria Jimenez

        Thank you! learned a lot

        Reply
      18. Isaac Becraft

        My Dad was just using a multimeter the other day when he was working on the house.

        Reply
      19. Ryder Blais

        It’s crazy the amount of electricity humans can produce so far yet, we’re at only a fraction of the power a lightning bolt makes with normal appliances.

        Reply
      20. Zandie Ortiz

        I did not know you could measure electricity, super cool!

        Reply
      21. Gunnar Bendorf

        Love it 😁

        Reply
      22. Jezlyn Chavez

        I learned a lot watching this video.

        Reply
      23. Elisiyana Louis

        The fact that electricity can be measured opens up endless possibilities of scientific research! The lengths we can reach through science are truly astonishing.

        Reply
      24. Logan Rentner

        These videos are the best!

        Reply
      25. Kamilah Bello

        I really enjoyed Tobias’ talk regarding Douglas Engelbert and the invention of the original mouse. Who knew how important the mouse would become for computer technology

        Reply
      26. Riley States

        R-51 is awesome! And I wish I had a multimeter

        Reply
      27. Llondon Bates

        “Resistor” HELP!! XDDD

        Reply
      28. Ana Maria Chaves

        Hi! I watched this live from North Carolina. I really enjoyed the live! I absolutely love how everything is about science and also loved learning more ab measuring electricity, etc. Thank you!!

        Reply
      29. Angie

        love learning something new everyday!

        Reply
      30. Teagan Oliver

        Love to have that book

        Reply
      31. Alexander Bryan

        Where do you think computers will be in the next 25 years?

        Reply
      32. Uzair Martinez

        I never knew you could measure electricity!

        Reply
      33. ashton

        I love r-51!!

        Reply
      34. timothy conklin

        Thank you!

        Reply
      35. Sara Francis

        Love new information and I really dislike the change of daylight saving time.

        Reply
      36. Kapri

        Nice! Learning about measuring electricity was pretty interesting.

        Reply
      37. brianna stilwell

        Measuring electricity is awesome!

        Reply
      38. Vivienne Robillard

        This is so neat!!

        Reply
      39. Becker James Eisele

        I liked r-51 a lot!

        Reply
      40. Cassidy Arnett

        R-51 is goofy

        Reply
      41. Alejandro Price

        Yes please put mutimeters on the store in a black and gray color

        Reply
      42. Sophie Nelson

        I didn’t even know measuring electricity was a thing thank you!

        Reply
      43. Alejandro Price

        Can we get a book like that??

        Reply
      44. Caiden Hiner

        so cool loved learning about Resistance and Multimeters

        Reply
      45. Tyler Whitsel

        Amazing live as usual

        Reply
      46. Nakova Crocker

        Thank you!!

        Reply
      47. Angelina

        This is so cool! Also that end bit was really meaningful

        Reply
      48. nathaniel thompson

        ha so funny. I love R-51

        Reply
      49. mackenzie

        I love how multimeters work

        Reply
      50. Jadrian Mayo

        I really liked learning how to measure electricity. I learned something new.

        Reply
      51. Brayden

        I love R-51

        Reply
      52. Jasmin Sosa

        I love how the original mouse actually looked a lot more like a mouse!

        Reply
      53. Callen

        Learning about how to measure electricity is really cool!

        Reply
      54. Aden Moore

        This was a great episode! I do think y’all should include a multimeter in the store, it seems like it’d be fun to play around with.

        Reply
      55. lillian

        I love the store! thank you for making it!

        Reply
      56. Mariah Tyus

        R-51 is so funny!

        Reply
      57. sage

        I love a pink mulitmeter in gold store

        Reply
      58. Titus Russom

        I had a multimeter I only used it for alternating current.
        Thank you for educating me on the many uses of the multimeter and resisters.

        Reply
      59. Aixa R

        Whats you guys favorite school subject? (Besides science)

        Reply
      60. sage

        I LOVE YOU DR ROGER BILLING

        Reply
      61. Kinsey Spradlin

        It was very cool to hear about 4 new planets circling Barnard’s star, how big are they?

        Reply
      62. Alexander Treat

        Thankful for Acellus and being able to learn about technology

        Reply
      63. mimi

        I would love to see pink mulitmeters in the gold store. I love Todd Edmond and would love to see him in more courses! I love science live!

        Reply
      64. Gia

        I love how the mouse was invented.

        Reply
      65. Barrett Pirtle

        Learning about Ohm’s Law and how electricity works is so interesting

        Reply
      66. Charlotte

        multimeters are fascinating!!!

        Reply
      67. Leah

        I really enjoyed learning how to measure electricity!

        Reply
      68. Emerale Stephens

        Did Elon Musk get the name Tesla after the guy named Tesla?

        Reply
      69. Renee tarantelli

        Love learning about electricity

        Reply
      70. Bethel Tobias Ivester

        Wow this episode was great

        Reply
      71. Sebastian

        Always love breakthrough moments in science

        Reply
      72. Noah Soucie

        THIS IS SO COOL

        Reply
      73. eva

        I’m so thankful for Acellus:)

        Reply
      74. Memphis Moore

        One of my favorite videos yet! thank you for sharing this.

        Reply
      75. Luciano

        I was diagnosed with ADHD.
        I really don’t like to sit still. This school helps me not have to sit down for very long. And I like school now. This will be my third week at Acellus.

        Reply
      76. Justin Estevez

        Dr. B is such a great salesman. He made that multimeter sound like the most fun thing of all; And yes I think you guys should put some In the Acellus Store maybe in blue.

        Reply
      77. Simone tarantelli

        I love the ai bit 😂

        Reply
      78. Persephone Davis

        With one questions I have I was wondering if there would be more in depth videos further explaining it . For example what factors would be needed to cause the resistance in the conductor.

        Reply
      79. Atticus W

        My dad uses multimeters in his work

        Reply
      80. Kennedy

        I did not understand how voltage was measured before, great Science Live

        Reply
      81. Kailey Holman

        This is good information to have because almost everything has batteries now.

        Reply
      82. Jackson Judiscak

        Tobias has always been an awesome segment but this one was super interesting.

        Reply
      83. Libby

        I couldn’t imagine having to use arrow keys to move around my cursor so glad we have computer mice

        Reply
      84. Zachery Johnson

        Wow this science live was very informative and i really enjoyed it!

        Reply
      85. Sophia

        Woah, I didn’t know we could measure electricity!

        Reply
      86. Robert Doyle

        Electricity Is really cool!

        Reply
      87. Tshepiso Makwela

        Cool video.

        Reply
      88. Armaan Shah

        where do you find muscle wire?

        Reply
      89. ella spence

        I love Science Live videos!

        Reply
      90. Madilynn J

        Thankful for the video lives

        Reply
      91. Myckael J

        Thank you Dr. Roger Billings for this program.

        Reply
      92. Merle J

        Love Science Live

        Reply
      93. Yurieva J

        Love Acellus

        Reply
      94. Ariana Mauldin

        Jingle bells was funny

        Reply
      95. Nicole Brennan

        Are multimeters able to detect electromagnetic fields from a light installation?

        Reply
      96. Bridger bellavia (*Vinny*)

        This is literally my favorite episode of science life. I’m hopefully going to be an electrician someday!!⚡️⚡️

        Reply
      97. Jackson M.

        I would like to have a red one in the store. This was a great video!

        Reply
      98. Deanna Thompson

        Yes, please put the multimeters in the Gold Store – purple or red

        Reply
      99. Taven Oluwa

        Acellus is the best!

        Reply
      100. Jayden Huse

        Thank you for this Episode of Science live, Second week on Acellus so far!

        Reply
      101. Sarah

        Watching from connecticut

        Reply
      102. Raylan Springstead

        We love acellus, My son har soared with his learning skills since joining.

        Reply
      103. Taymiyyah SuTay

        Wow! i really liked this one! so interesting!

        Reply
      104. Jayden Bowles

        I’ve always wondered how electricity works, and I do now.

        Reply
      105. Anthony Naqvi

        Nice watch Dr.B!

        Reply
      106. Wencai Mckillop

        That is amazing, i love watching science live, Roger billing and Pajet are remarkble when they are together

        Reply
      107. Preston Hagan

        this one was quite mind boggling!

        Reply
      108. Leif

        Pretty cool

        Reply
      109. kera m osborne

        Can you put a purple multimeter in the store.

        Reply
      110. Russell Ellis

        Do they know why some resistors are more tolerant than others?

        Reply
      111. Jacob Lott

        i wonder what the most amount of voltage ever pushed through any given conductor was.

        Reply
      112. Katie Miller

        what factors affect the resistance of a conductor?

        Reply
      113. Ruth Baldwin

        I really loved this one!

        Reply
      114. Cole Melerine

        I have to use a mouse with my computer. I cant imagine it any other way.

        Reply
      115. Jessica Romero

        This is so amazing!

        Reply
      116. Taylor Crosby

        I want my own star now

        Reply
      117. bentley sparks

        why should you make sure the circuit is powered off?

        Reply
      118. Jayden

        I love science live q(≧▽≦q)

        Reply
      119. David Leick

        i love acellus [:

        Reply
      120. Lincoln Stephens

        I wish I could be there and see how science live do it.

        Reply
      121. Liam

        I love watching science live!

        Reply
      122. Muhaimin Khattak

        this Wednesday was one of my favorites :}

        Reply
      123. Asher Bhatti

        I like the live videos.we can learned a lot .My son like these videos and how they explained with experiments when he heard those videos afterwards he likes science and he told me that mom now I want to become a scientist .He loves to doing experiments a different things .✌

        Reply
      124. Jason Sparks

        What is a multimeter?

        Reply
      125. Ashlyn Rider

        Wow! I had no clue that that’s house mice for computers came to be.

        Reply
      126. Gabe

        Love Acellus

        Reply
      127. Zaid Abdul

        It was pretty fun with DR. Roger Billings

        Reply
      128. Brianna Garcia

        Acellus has really help me, and other friends and family! This school helps many people, including me! The fact that this community is willing to help any and all kids like me! Keep up what you’re doing Acellus!! Thank you!! Congrats to Charile!!

        Reply
      129. Payton Alvey

        I love daylight savings time! Lighter longer

        Reply
      130. Jaecarrius johnson

        this is awesome!!!!!!

        Reply
      131. Keren Rosen

        Cool episode!

        Reply
      132. Zane Ford

        This was super cool

        Reply
      133. Abraham Cutler

        That’s cool!!!!!!!!!

        Reply
      134. Tyler Faircloth

        lol this is so funny im 10 and love the part where you say nope that is my watch lol I love science live

        Reply
      135. brianna stilwell

        Love loved this!

        Reply
      136. Adria Samu

        I think electricity is very interesting.

        Reply
      137. Dustin Thrasher

        I found it interesting that the muscle wire reforms back to its original position when heated up.

        Reply
      138. Lane Ellis

        I can’t imagine having to use the arrow keys to control my cursor. We are lucky to have people willing to innovate.

        Reply
      139. Dillen

        I wish I could go to science live

        Reply
      140. Dean hammond

        I love science live I hope a new one is come in 10 days(づ。◕‿‿◕。)づ

        Reply
      141. Deion S

        I love learning science!

        Reply
      142. Evelyn Yenchko

        This was so cool!

        Reply
      143. Alina Orozco

        This is so amazing!!

        Reply
      144. Jordan Campbell

        So each piece of memory wire can only remember one memory. So how many would it take to move like a person?

        Reply
      145. Aviles Ramirez

        I liked the live demo of meters and resistors! It was cool to learn more about what volts truly measure: How hard the electricity is pushing through it’s current.

        Reply
      146. Allegra Geter

        Very interesting! I liked learning about resistance.

        Reply
      147. Hannah Soye

        This was really cool!

        Reply
      148. Samil Nelson

        Love all the opportunities to learn from someone who knows their stuff !!

        Reply
      149. Dalton mccawley

        I heard you can pay to have a star named after you

        Reply
      150. Makayla Puig

        Measuring energy is a very cool

        Reply
      151. Kiana

        I had no idea that the mouse used to be wood.

        Reply
      152. Megan Hawkins

        I had no idea that is how the mouse was made! Amazing!

        Reply
      153. Nikolai Cornwell

        My Dad has one.

        Reply
      154. Tenley cordry

        I love this program and all the learning opportunities!

        Reply
      155. Anthony Pulido

        I love watching science live!

        Reply
      156. Aaron

        What’s your favorite subject in science

        Reply
      157. Arianna Graham

        I found it interesting how if heated up, the muscle wire goes back to he state it remembers.

        Reply
      158. Sugar Lauren Freeman

        Hello my name is Sugar Lauren Freeman,
        I would like meterader in purple please and can you teach me how to make a robot I love science

        Reply
      159. Dennis Flores

        Really enjoyed learning about resistance and everything else y’all talked about. Thank you!

        Reply
      160. Mackay Richardson

        I think that you should do Acellus golden colored multimeaders

        Reply
      161. Yochanan Harris

        YESSS!!!!! I WANT A MULTI METER IN THE GOLD STORE!!!

        Reply
      162. charlie

        you guys make learning entertaining thank you

        Reply
      163. Grace Robinson

        I love this science live video !

        Reply
      164. Jason Sparks

        What are transmitters?

        Reply
      165. Breelyn Hudson

        The evolution of the mouse was so cool .

        Reply
      166. Alina

        ❤‍🔥

        Reply
      167. Alina

        I wish I could go to science live so bad

        Reply
      168. Jayden Batista

        Thanks for this lesson on measuring electricity. Multimeters are such useful tools for checking voltage, resistance, and current in everyday devices.

        Reply
      169. Noah Henson

        Electricity is so cool

        Reply
      170. Skyeler Barfield

        I never thought about how life was like using a computer with no mouse!!

        Reply
      171. Anassa Nomura

        How do you build a robot?

        Reply
      172. Sloan Hale

        Acting and Filmmaking courses would be amazing!

        Reply
      173. Liam Howard

        yes, I think a multimeter would definitely be a good addition to the Acellus Store, and it should be in the Acellus blue.

        Reply
      174. Layten

        I have been doing Acellus for 3 years and I started in four grade now I’m in 7 it is the best school I have ever done I really love this school it has helped me so much I don’t have many friends on here but that is fine but, I love science live it is so cool.

        Reply
      175. Journi Powers

        I enjoy learning about electricity. My parents just bought us a new home and my dad talks about it a lot and how the lights work in the house.

        Reply
      176. Bako and Deko

        Wow I wish I could go to science live!!

        Reply
      177. Zoey White

        How does energy transfer to battery’s?

        Reply
      178. Gabe Houchin

        Love how he starts every episode keeps them fun and entertaining.

        Reply
      179. Auastynn Brash

        I think it’s so cool that this program has come so far but you’re still looking for suggestions thank you

        Reply
      180. Asher Levi Puska

        Hello Dr. Billings! I wanted to say that I believe your program, Acellus, is the best school program I have attended! I would also like to say that, and I’m sure everyone in these comment sections can agree, we all love you Science LIVE Videos. Your videos always are interesting, fun, and always entertaining!
        I also wanted to congratulate Charlie, he seems to be working hard, and his work has paid off!
        I also want to thank my AMAZING classmates for helping push me to do well and me to push them. I can’t name them all, but I can thank a few of them here.
        Thank you
        Nakova C.
        Luis Daneil P.
        Raya H. (Who always wins the weekly leaderboard, great job)
        and the other classmates I didn’t name but thank y’all. When you said to send feedback about ways to improve Acellus, I started to think. Of course I couldn’t say anything about the school work(which is amazing btw) but maybe about our profiles! I was thinking that maybe y’all could add background music. Which would be pretty cool. Or maybe class groups, that are monitored by Acellus Staff.
        Thank you all for your dedication to Acellus and us, the students.
        Thank you Dr. Rodger Billings!!

        Reply
      181. Preston Stewart

        I love that this teaches me about tools that measure electricity.

        Reply
      182. Azylynn p

        I love this keep it up.

        Reply
      183. Han Nguyen

        I REALLY love watching SCIENCE LIVE !!!

        Reply
      184. Martyn Swanepoel

        Multi meters is very fascinating. I would like a Science LIVE video
        explaining how to calculate the resistance using the colours painted
        on the resistor and what each line represent. It is quite interesting.

        Now I understand why multi meters is called Multi Meters!
        They have multi functionalities

        Reply
      185. Jaxon Rea

        How many mouses did Steve job create until he made the perfect one?

        Reply
      186. Noah Lair

        My favorite part was when Mr. Billings showed how a resister worked.

        Reply
      187. Logan

        I did some electrical work with resistors, but I have learned the most from this video

        Reply
      188. Nathan Davis

        Love these videos they’re so fun!

        Reply
      189. vivienne

        i LOVE how these videos are formatted to be entertaining yet informative at the same time. learning about electricity is so cool!!

        Reply
      190. Simone tarantelli

        That so cool!

        Reply
      191. Caleb Perzhu

        Thank you for explanation about Voltage

        Reply
      192. Quintero Cartwright

        I did not now that scientists have new discovery that there are four tiny planets circling the Bin Heart star.
        Also, I love how Acellus Academy caters to various learners where students can work at their own paste.

        Reply
      193. Mason M

        I love watching these videos.

        Reply
      194. Miecqe Cronjé

        I love watching science live! Always very interesting

        Reply
      195. Ambellina Colpitts

        It was interesting to learn about the creation of the mouse and its uses. Thank you for another great science live!

        Reply
      196. Abigail McGrath

        Daylight savings is cool but weird

        Reply
      197. Edan Langston

        My daddy is an electrician and he has a lot of electric guys that work with him.

        Reply
      198. Yaretzi garcia

        I love science

        Reply
      199. the roberts kids

        we love the lives

        Reply
      200. Sean Loftus

        Thank you for making science live!

        Reply
      201. McKenna Kuiper

        Day light savings has been such a fun topic to learn about! Really enjoyed this video

        Reply
      202. Makayla Sampson

        These are so cool to watch

        Reply
      203. Yanella Alequin

        Daylight savings…I don’t like it when we lose one hour

        Reply
      204. Trevor Fishack

        its amazing how electricity works

        Reply
      205. Benson Ryker

        I LOVE THIS AND MYSELF AND DAD ARE GOING TO DO SOME SCIENCE IN THE GARAGE.

        Reply
      206. Abigail Vela

        R51 is so funny!

        Reply
      207. Corwyn Zirpoli

        Rly fun to watch

        Reply
      208. Braylon Morris

        I love Acellus!

        Reply
      209. suraiea

        awesome lesson! <3

        Reply
      210. Kendallyn Rose

        Knowing Ohm’s Law while watching this science live really helps.

        Reply
      211. Caiden Hiner

        love this so cool

        Reply
      212. Skyler roston

        What is the highest voltage for a home appliance?

        Reply
      213. Michael Myrick

        I found it interesting about the measurement volts of electricity or resistance in the video.

        Reply
      214. Cody Krause

        This was great.

        Reply
      215. bailey fletcher

        Love watching these!

        Reply
      216. Spencer McKeon

        I loved this, science live is my favorite.

        Reply
      217. Chase

        How long did it take to make acellus?

        Reply
      218. ryanna edenfield

        daylight savings time is so cool but weird

        Reply
      219. Grace Church

        My favorite teacher is Mark Rogers! He helped me so much in math with fractions!

        Reply
      220. BayLeigh Howland

        This episode provided a clear and insightful explanation of how multimeters function and their crucial role in electrical measurements. The practical demonstrations made complex concepts accessible.

        Reply
      221. Elias Barretto

        Muscle wire is so cool! I would love to become a scientist or engineer and create something innovative.

        Reply
      222. DPreston

        We are so excited for Charlie! What an achievement!

        Is the accuator expensive? Will everyone use the muscle wire now?
        .
        Dr. Tobias is so funny! It’s cool to see how far we’ve come with every phase of the computer- the story of the mouse is wild. Just how they demonstrated it for the engineers was ahead of it’s time really.

        The multimeter cables is a little like jumping a car. I’d like to have a blue or green multimeter. That would be cool!

        Reply
      223. Tobias Dingus

        cool

        Reply
      224. Leilah Peterson

        Congratulations Charlie!

        Reply
      225. Jeremiah Wade

        It was so awesome to learn how the mouse was invented and reinvented!

        Reply
      226. Prince McGriff

        Always assume the power is on guys 🙂

        Reply
      227. Kylieeeeeeee

        I lovvvveeee Science Live, I watch it in the car!

        Reply
      228. leeland whitehouse

        this is so cool the way eletricity works

        Reply
      229. river whitehouse

        really enjoyed this

        Reply
      230. Isabella baldino

        we don’t have daylight saving in hawaii

        Reply
      231. Tristan Gore

        Happy to be on Science Live!

        Reply
      232. Deanna

        The story at the end was so sweet! This was so interesting though!

        Reply
      233. Aaron madura

        We just used a multimeter last week to fix our refridgerator!

        Reply
      234. gavin Munro

        Daylight savings messes me up

        Reply
      235. Varvara Erofeeva

        I enjoyed it, thank YOU so much!

        Reply
      236. Damien Daniels

        I love robots too!

        Reply
      237. Jakiha Collins

        Happy to be on Science Live!

        Reply
      238. Zander Stephens

        Daylight Savings Time messes me up.

        Reply
      239. Shane Bowles

        I enjoy these videos. They get me excited about science.

        Reply
      240. Katya

        This was a fun watch! The Christopher story was as sweet as chocolate.

        Reply
      241. Violet Sophia Cumming

        Its so great hearing about the evolution of technology.
        and its kind of crazy to think that computers took up whole rooms at one point.. And now how small they’ve become.

        Reply
      242. kaitlyn hatcher

        i loved this episode! Learning the way the mouse is made was incredibly interesting.

        Reply
      243. Tate Pierce

        Hooray for Charlie!

        If you send a million volts through a smaller resister, why doesn’t it blow out the resister?

        Reply
      244. Andrea Cervantes

        This was so fun to watch and learn!

        Reply
      245. Max McCall

        How hot does the wire have to be for it to stop reforming

        Reply
      246. Jahmir baxter

        Great video Dr.john gave a great presentation on explaining how the robotic arm works

        Reply
      247. Logan Gilmore

        Its always interesting how resistance works

        Reply
      248. Arianna Castillo

        so happy in in this program!

        Reply
      249. Croix Long

        I loved how dr. John explained how the extremely high tech robot arm worked.

        Reply
      250. Sophia Benson

        Wow! Muscle Wire is awesome!🤩

        Reply
      251. Gage Hasselmann

        Please hurry on the filming course I want to do it before I am done with school

        Reply
      252. Aidan

        I never thought about how complex just a mouse is.

        Reply
      253. Gracelyn Weitz

        wow never knew resistance could be so cool

        Reply
      254. aaisha

        I love your videos DR.Roger Billings

        Reply
      255. Bryce Hoffman

        These videos are so encouraging.

        Reply
      256. 𝑚𝑎𝑦𝑧𝑖 ౨ৎ

        electricity is so cool!! ❤︎︎

        Reply
      257. Blythe

        So, you said it can take on jobs people don’t enjoy or can’t do…. What about dirty jobs?

        Reply
      258. Teagan Parkinson

        I love that this teaches me about the tools that measure electricity.

        Reply
      259. Audrina Aaron

        so many things go into having electricity, it’s so fun to learn about it!

        Reply
      260. Libby

        Haha R-51 is so funny!

        Reply
      261. Bre'Shaun J Bailey-Amos

        Fascinating information about the mouse! Thanks Acellus!

        Reply
      262. Tommie Hendrix

        I had no idea that NASA was involved in the development of the mouse.

        Reply
      263. Asher Levi Puska

        Hello Dr. Billings! I wanted to say that I believe your program, Acellus, is the best school program I have attended! I would also like to say that, and I’m sure everyone in these comment sections can agree, we all love you Science LIVE Videos. Your videos always are interesting, fun, and always entertaining!
        I also wanted to congratulate Charlie, he seems to be working hard, and his work has paid off!
        I also want to thank my AMAZING classmates for helping push me to do well and me to push them. I can’t name them all, but I can thank a few of them here.
        Thank you
        Nakova C.
        Luis Daneil P.
        Raya H. (Who always wins the weekly leaderboard, great job)
        and the other classmates I didn’t name but thank y’all. When you said to send feedback about ways to improve Acellus, I started to think. Of course I couldn’t say anything about the school work(which is amazing btw) but maybe about our profiles! I was thinking that maybe y’all could add background music. Which would be pretty cool. Or maybe class groups, that are monitored by Acellus Staff.
        Other than that, I am very much enjoying math at the moment with Dr. Aaron Brown my favorite teacher of whom I would like to meet one day.
        Thank you all for your dedication to Acellus and us, the students.
        Thank you Dr. Rodger Billings!!

        Reply
      264. Brayden Bauer

        I love learning about electricity it has always been so Interesting to me

        Reply
      265. Joey W

        Learning about the meter was interesting because you use that at home for things. It was especially interesting about keeping a hand behind your back to prevent electricity going through your heart.

        Reply
      266. Pacin Asawathaworn

        I agree that using mouse helps the interaction to computer is easier, cannot imagine how people in older times work with computer.

        Reply
      267. Jahan Kendrick

        My dad showed me the multimeter. It is very cool.

        Reply
      268. Ambroise Dulauroy

        It’s very interesting because we use electricity in everything today: our computer, our phone, our TV, everything we have in the house.

        Reply
      269. Trystin Thompson

        I love learning about electricity and how it all works

        Reply
      270. Coralynn Puska

        I belive Nasa has been around for about maybe 64- 65 years. Also I don’t think R 51 needs a resistor for Pajet Monet!

        Reply
      271. Abigail Welenc

        I have always wondered what those transformer boxes were, theres a few randomly around the neighborhood.

        Reply
      272. Alexa Trosky

        Yes, I would love to be able to purchase a meter on the Gold Store. I really enjoyed watching all the things you could do with it and find out. I am excited to explore and find out about volts and current in batteries and light bulbs and many different items. Thank you!

        Reply
      273. Jocelyn Perez

        I enjoyed this video about resistance and multimeters!

        Reply
      274. Ava Pinco

        So many things play into resistance and how it works.

        Reply
      275. Dean Dunaway

        This was a super interesting episode cause I love electricity, Thankyou DR,B

        Reply
      276. minerva

        I love learning about electricity!

        Reply
      277. Thailand

        Dr. Billings explained how resistance controls the flow of electricity in a circuit. It is measured in ohms (Ω) using a multimeter, a handy tool that checks voltage, current, and resistance in electrical circuits. He demonstrated how to use a multimeter to measure volts and test different components like resistors, which help regulate electrical flow.

        He also talked about Nikola Tesla, the pioneer of alternating current (AC), which powers our homes and cities today. Unlike direct current (DC), AC allows electricity to travel long distances efficiently. Understanding these concepts helps us appreciate how electricity powers our world.

        Reply
      278. Athena Byrne

        What is the memory wire made of?

        Reply
      279. Abigail Mitzel

        Acellus makes learning fun and interesting

        Reply
      280. Maya Wossne

        How long has NASA been around?

        Reply
      281. Jessica Brück

        I have used Multimeters with my dad a few times. Now I know exactly what it is and all the settings. I also found the history of the mouse quite interesting. Thank you

        Reply
      282. Brielle W.

        I had no idea the mouse was made that way, cool!

        Reply
      283. carlee mashek

        Electricity is my favorite science study!

        Reply
      284. Melody Quinones

        PINK!!!!!!!

        Reply
      285. Ambellina Colpitts

        The memory wire that Dr.John was talking about was so cool. This science live has made me more interested in computer science. I’m excited to check it out.

        Reply
      286. Emillia Giles

        We are watching together with my grandmother.

        Reply
      287. Zoey Garcia

        I never realized you can measure electricity.

        Reply
      288. Lillian Barkan

        Thank you for teaching me all of the science that you know to make me smarter.

        Reply
      289. Joshua Webb

        I’d like green multi meters!
        It’s amazing how the# of wires wrapping around can change how much energy goes through.

        Reply
      290. Tristan Davis

        Wow interesting that’s how electricity it measured!

        Reply
      291. Karlee Urbaschek

        My grandfather was an electrician his whole life. I really liked this video and if you can get the multimeter in would like to get one. Parents said would get. Pink or blue would be my favorite color choices! My great grandfather worked for the city and worked on electrician lines, he had got electricuted real bad many years ago when working on a power line, my mom and grandma told me and luckily lived but was burned severely. Thank you for the great topic!

        Reply
      292. Savannah Brennan

        I love the comparison between muscle wire and a plant growing! I also love the different phases of it, but it does sounds like you have to be aware of the right amount of heat to use in order to get the contract action. Thanks for this week’s live!

        Reply
      293. Carson Taylor

        My great grandfather has a star named after him

        Reply
      294. Adalyn Zink

        I loved learning about the multimeters and memory wire. Is there some where I can get memory wire to experiment with?

        Reply
      295. Rayana Wulf-Towne

        Is there a limit to how many times you can form and reform muscle wire before it breaks or stops reforming to it’s original position?

        Reply
      296. Declan Hart

        I loved hearing the history of the mouse.

        Reply
      297. Eldrin Fletcher

        Why did the mouse had 3 buttons?

        Reply
      298. Nei Rivera

        Why is day light savings a thing?

        Reply
      299. Asher Rice

        Great video on multimeters!

        Reply
      300. Eva Sirotek

        I didn’t know that multimeters had many different functions!

        Reply
      301. Maddie

        Wow that’s pretty cool I didn’t know there was a way to “measure” electricity

        Reply
      302. Jackson B.

        It is awesome how useful multimeters are in finding problems in circuits.

        Reply
      303. Ellie

        Great job Charlie!

        Reply
      304. Genevieve Melody

        I loved this! Thanks so much!

        Reply
      305. Lucy Rose

        They do not do daylight savings where i live in Puerto Rico!

        Reply

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