The Collision Problem That Crippled Ethernet (And How We Solved It)

Ever wonder how computers actually talk to each other over a wire? In this episode of ScienceLive, we break it all down β€” starting with the earliest Ethernet networks running over coaxial cable, through the switch to Cat5 cabling, and into the fundamental building block of all network communication: the packet.

You’ll learn what packets are, how they carry your data across a network, and why early Ethernet had a serious flaw β€” data collisions that could bring an entire network to its knees. We explain why collisions happen and what they mean for the data you’re trying to send.

Then comes the part we’re most excited about: how my team and I discovered a solution to stop packet collisions entirely, leading to the invention of WideBand networking. In this episode we give you the teaser β€” next week, we’ll teach you exactly how it works.

This lesson is for anyone who wants to truly understand computer networking from the ground up β€” how Ethernet came about, how it works, and where it’s headed.

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 β€œDrB” 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 β€œgive back” by mentoring students in conjunction with the Roger Billings Scholarship Program.


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

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5,043 Comments

  1. Marigold

    We watched the Artemis 2 launch and return. It was really exciting.

    Reply
  2. Skylar

    Can’t wait for the next one !! Love science Live

    Reply
  3. Lillian

    science live is great!

    Reply
  4. Nathan

    Thank you Dr. Billings for all you’ve done for everyone. If it were not for people like you, your mentor, Bill Lear, and Ron Crane as well as others, working so hard to develop things that help us I don’t know where we would be. As far as r-51 goes……we all need some adventures outside of our norm to help us get motivated to do BIG things. I love Science Live.

    Reply
  5. Clarissa

    im so excited for the new episode tonight!

    Reply
  6. Titus

    I like to invent things!

    Reply
  7. Juan

    Thank you, can’t wait for the next episode

    Reply
  8. Elizabeth

    So cool!! I love these videos

    Reply
  9. Roen

    I liked the inventors part. Inventing would be fun

    Reply
  10. Keira

    Learning about the Ethernet was truly fascinating. It has really developed and helped to shape our world today. I am glad it was able to advance through numerous theories and hypotheses!

    Reply
  11. Trish

    It’s a really amazing and charitable act to try and make Acellus Academy free to make it accessible to more people.

    Reply
  12. Colton

    Ethernet is such a neat invention.

    Reply
  13. Oliver

    Almost done with 5th grade. Excited for 6th!

    Reply
  14. Amaiya

    I love that students inventions have the possibility of being invested in!

    Reply
  15. Franswa

    we followed the Artemis crew. it absolutely amazing

    ethernet looks complicated

    your bathroom sound cool. I want an automated house as well

    i want to see R51…

    Reply
  16. Mubin

    Great episode. Can’t wait for the next one!

    Reply
  17. Beck

    That is wonderful you are going to review the inventions and potentially invest in them. Thank you for helping shape the future!

    Reply
    • Korah

      I love science live it’s so interesting to learn about the technology around the world!!

      Reply
    • Autumn

      Me too I also like how funny R-51πŸ˜‚

      Reply
    • Sariah

      Wow, that was a good one. I really like that you should do more.

      Reply
    • London

      i’m very interested in the new scholarship program!!

      Reply
    • Isabella

      i love that

      Reply
    • Mark

      How does the scholarship work?

      Reply
    • Cody

      Wow, how cool!

      Reply
    • Anaeli

      Thank you Dr. Billings!

      Reply
    • Shelby

      An interesting science live, wonder what the next one will be about

      Reply
    • Ellie

      I really liked that you guys covered the return of artimas 2

      Reply
    • Braxton

      Before this video I had never heard of the ethernet.

      Reply
    • Connor

      I liked this Science Live

      Reply
    • Cheyenne

      i love science fairs! they’re so cool

      Reply
    • Hannah

      You are the best teacher

      Reply
    • Austyn

      love this

      Reply
    • Jocelyn

      Thank you for these science videos. They are amazing, and I learn new things every single time. I’m looking forward to the next one.

      Reply
  18. Zoey

    And another wonderful Science Live! Can’t wait to tune in for the next!

    Reply
    • Beautiful

      The Collision Problem it’s very interesting, but I plan to look at it way more often

      Reply
    • Lilly

      Very informative. Thank you

      Reply
    • Rheagan

      I love science live

      Reply
    • Abigale

      These videos are always so interesting to watch!

      Reply
    • Ayla

      Off topic, but I love that dinosaur game and I was just playing it last night!!

      Reply
    • Rosemarie

      Science is my favorite.

      Reply
    • Becca

      Same!

      Reply
    • Zaeden

      The Ethernet sound cool cause multiple computers can hook up to one printer.

      Reply
    • Rowan

      ethernet is the
      best

      Reply
    • Cloe

      yes very helpful for my studies like i need this to do better

      Reply
  19. Kenzie

    I liked how Funny R-51 is, is there a video that I can watch about Isaac Newton and what he did?

    Reply
    • Owen

      I really enjoy the science live videos. Keep them coming! My little sister even watches them. She’s 3 so she talks a lot and asks a lot of questions.

      Reply
    • Natalie

      Wow another wonderful science live!!!! Can’t wait for next week!!!!!

      Reply
  20. Olivia

    Definitely interested in the new scholarship program!

    Reply
    • Theodore

      I use this!

      Reply
    • Jordan

      I am so excited to see how the Artemis 2 Space mission Goes.πŸš€πŸš€πŸš€

      Reply
    • Cloe

      yesssssssssssssssssss

      Reply
  21. Thomas

    I love the whole thing about Ethernet I actually use one for my computer! Cant wait for the next one.

    Reply
    • Rayonna

      Great Video! The science behind Ethernet, is so interesting. I never knew it worked like that.

      Reply
    • Hannah

      I love this video I can’t wait for the next one

      Reply
  22. Berkley

    Learning about the Ethernet was truly fascinating. It has really developed and helped to shape our world today. I am glad it was able to advance through numerous theories and hypotheses!

    Reply
    • Morgan

      I think this was a very neat episode

      Reply
  23. Soraya

    I wish you could solve traffic on the highway like Ethernet collisions.

    Reply
    • Tyson

      Is an ethernet cable better that wifi

      Reply
  24. Sean

    Keeping my eye out for r51 xD

    Reply
    • Eleanor

      I’m not sure if I like that kind of technology, sorry. πŸ™

      Reply
    • Drew

      What else can we learn about Ethernet?

      Reply
    • Dariy

      Very amazing video, I use Ethernet for my computer everyday, it’s cool to learn about it

      Reply
  25. Lillian

    WOW! Can not wait to hear more on wednesday. So glad collisions aren’t a thing anymore!

    Reply
    • Zoie

      Great video about the progression of ethernet

      Reply
  26. Zahir

    Great video about the progression of ethernet from a 2 mb network into what it is today.

    Reply
  27. Sophia

    Favorite video so far!

    Reply
    • Merek

      Nice!

      Reply
  28. Andrei

    It was interesting to learn how Dr. Roger Billings solved the ‘collision’ problem in networking. The idea of replacing a simple hub with a ‘concentrator’ (or buffered repeater) that saves packets in a FIFO memory really explains how networks became so much more efficient.

    Reply
    • Oliver

      So interesting!

      Reply
  29. James

    It’s really interesting on the history of Ethernet, I’d Love to hear more!

    Reply
  30. Cody

    Love learning things from these video’s i tell my parents something new every day and i tell them i learned it from science live.

    Reply
  31. Hana

    i love how you are always talking about hydrogen.Because I love hydrogen, and that was really cool about Ron Crane

    Reply
  32. Hana

    I have the perfect science fair idea. Ethernet is so cool.

    Reply
    • Abigail

      R51 is soo funny, can’t wait for the next science live!!! Also loved learning about the Ethernet cables

      Reply
  33. Grayson

    Science live is the highlight of my week!

    Reply
  34. Chloie

    I learn something knew every time I watch science live!

    Reply
  35. Adalynn

    I LOVE ACELLUS!!!!

    Reply
  36. Madison

    Science fairs are always so exciting even just the daily lookout for new problems can be so much fun! Thanks science live!

    Reply
  37. Annika

    This weeks Science live, was so interesting, the Ethernet was really cool to learn about! Howdy from Montana 🀠

    Reply
  38. Elizabeth

    I really enjoy these videos and all the theories in the comments.

    Reply
  39. Raylah

    A good live like always!

    Reply
  40. Genevieve

    Wow, very interesting Science Live this week!

    Reply
  41. Payson

    Happy Monday!!!

    Reply
  42. Melanie

    Thank you, I’ve learn a lot of new words today with technology and such an amazing live science video for this week! There is always more to discover each week.

    Reply
  43. Emily

    The internet is great I like how you can do many stuff on it.

    Reply
  44. Bianca

    This weeks episode was so interesting, Thank you!

    Reply
  45. Rebekah

    I love Science Live because it’s so much fun. My favorite part is when one of the guys was playing a dinosaur game.

    Reply
  46. Noah

    cool episode. Dr billings!

    Reply
  47. Fili

    Dr. Billings has done so much that I didn’t know about. Thanks!!

    Reply
  48. Logan

    lives keep getting better and better, i love the lives

    Reply
  49. Will

    Another amazing Science Live!

    Reply
  50. Angelica

    how much more can we do now to improve the ethernet? love how Mr.Billings will invest in an idea he loves!

    Reply
    • Dane

      R-51 learning new sports is hilarious and awesome!

      Reply
  51. Brooklyn

    I love that r51 is exploring new sports now he should learn what lacrosse is!!!🀣🀣🀣

    Reply
    • Oliver

      We’ve watched some footage of the Artemis 2 journey and they wrung out a wet cloth and the water just clung to it since there was no gravity.

      Reply
  52. Kamden

    It’s interesting to think about how much slower networks would be without this solution.

    Reply
    • Hannah

      That was my favorite video so far

      Reply
  53. Samuel

    It’s cool how all of this works. Thanks Dr. Billing.

    Reply
  54. Brandon

    I saw him in the baseball field

    Reply
  55. Jethro

    They should do a Science Live video about caves,

    Reply
    • Natalie

      Oooh! That would be a cool one!

      Reply
  56. Liliana

    Its crazy to thing your biggest challenges can turn into your greatest accomplishments.

    Reply
  57. Zyone

    Science LIVE was launched as a way to β€œgive back” by mentoring students in conjunction with the Roger Billings Scholarship Program.

    Reply
  58. Aiden

    How long did it take to make the one billion bits per second internet?

    Reply
  59. Miyari

    Thank you all for what ya’ll teach and do for us every Wednesday I learn so much more and i love it!!

    Reply
  60. Kayleigh

    I had no knowledge of what an Ethernet was until this Science Live!

    Reply
  61. David

    I didn’t know that this is how two computers comunicate, with the ethernet packet

    Reply
  62. Hayden

    I wonder why Dr. Billings let his friend take credit for his solution to get rid of collisions within Ethernet. I also use Ethernet in my PC and it has worked wonders!

    Reply
  63. Cheyanna

    I liked learning about ethernet and how it came to be what it is now! cant wait for next week.

    Reply
  64. Benjamin

    I love science livee!! πŸ˜€

    Reply
  65. Keith

    I enjoyed learning about the Ethernet and how it lead to the creation of the internet.

    Reply
  66. Mekayla

    great video. really enjoyed it

    Reply
  67. Caden

    This was so cool to watch.

    Reply
  68. Jackson

    I love ethernet why, is it so much faster than wifi?

    Reply
  69. Keelynn

    We watched take off and the splashdown!!! Was so nail-biting!!

    Reply
  70. Raylee

    Acellus did a great job with this weeks video!

    Reply
  71. Jodee

    Thank you for taking the time to share information with us during your weekly science lives.

    Reply
  72. Kenza

    Artemis pictures have been awesome. Isn’t Nasa planning on building a base on the moon?

    Reply
  73. Morgan

    sorry for a late response, but awesome live!

    Reply
  74. Micah

    And another amazing live this week.

    Reply
  75. Kelby

    Great Science Live this week, thank you!

    Reply
  76. Timothy

    Lovely science Live!!

    Reply
  77. Nathalia

    i find science live so fasctinating .

    Reply
  78. Nevaeh

    This was a fun watch!

    Reply
  79. Isabella

    i love science live!

    Reply
  80. Frederic

    The collision problem was interesting.

    Reply
  81. Jaymen

    Very cool lesson, thx

    Reply
  82. Jake

    I don’t get how you guys manage to get me so impressed after every science live I watch, I mean they just keep getting better!

    Reply
  83. Karleigh

    the ethernet is really cool

    Reply
  84. Yvette

    How are science live topics chosen?

    Reply
  85. Elliana

    Great science live this week thank you!

    Reply
  86. Gwangjoo3

    Glaad we have ethernet

    Reply
  87. Gwangjoo2

    best class of the year by far

    Reply
  88. Serenity

    Hello from Georgia !

    Reply
  89. Jackson

    This was really interesting! Im excited for the next one!

    Reply
  90. Brian

    i love science live

    Reply
  91. Tim

    I loved this weeks episode!

    Reply
  92. Lorelei

    See you next Wednesday

    Reply
  93. Abby

    I’ve just Finished a lesson regarding hypothesis, theories, and more. It is nice to have a familiarity with the science live and making connections towards what I have already learned.

    Reply
  94. Emma

    One thing I like in today’s video was learning internet and how it works. I also learned that Ron Crane was working to make the internet better for people to be able to use.

    Reply
  95. David

    That’s cool how such a simple Idea made such a differnce!

    Reply
  96. Noah

    I love this!

    Reply
  97. Ethan

    amazing live this week can’t wait for more!!!

    Reply
  98. Regan

    It was cool of how the ethernet now works!!

    Reply
  99. Chloe

    The history of the internet is very interesting, thank you

    Reply
  100. Kinleejo

    I love these science lives

    Reply
  101. Ryan

    I find it so fascinating of how the signals between the FIFO and the chip works also the history of it along with how Ethernet became mostly of how it is today!

    Reply
  102. Brook

    I always end up liking these more than I expect.

    Reply
  103. Avery

    It’s always so fun to learn new things every week!

    Reply
  104. Parker

    Your so smart I love it!!

    Reply
  105. Aeden

    I enjoyed learning about the ethernet

    Reply
  106. David

    It is so exciting to know that in 2 years a spaceship wil land land on the moon after 54 years

    Reply
  107. Joel

    This was fascinating

    Reply
  108. Rocco

    why does Dr. John have a band-Aid

    Reply
  109. Jackson

    i love learning!

    Reply
  110. Huy

    Very interesting session! Thanks Dr.B for your inspiration

    Reply
  111. Danika

    This was fun to watch.

    Reply
  112. Seraphina

    So fun thank you

    Reply
  113. Sophie

    Hi it’s my first time watching this

    Reply
  114. Rylinn

    Science live was so cool this week!

    Reply
  115. Rusha

    Loved this week’s live’

    Reply
  116. Bryndzie

    Loved this!! Thanks for these!

    Reply
  117. Alylah

    Learning about ethernet was so interesting! Thank you guys for putting your time into these videos!!

    Reply
  118. Katrell

    So cool and interesting i love this science β™₯️

    Reply
  119. Elijah

    definitely the best science life yet

    Reply
  120. Cesia

    This is very educational and helpful and fun to watch.

    Reply
  121. Eliel

    It’s interesting how Ethernet has improved over time. Even though it’s around 50 years old, it’s still considered the gold standard in the present day and is still used all around the world.

    Reply
  122. Kalix

    It’s really cool to hear how much Billings has worked on for the internet.

    Reply
  123. Emerson

    Love these science lives!

    Reply
  124. Seongjin

    Great lecture, very helpful.

    Reply
  125. Isaac

    Loved the science live this week!

    Reply
  126. Jood

    Absolutely loving these lives. Keep it up.

    Reply
  127. Zoe

    i can’t wait to find out

    Reply
  128. Matthew

    Didn’t know that, wow!

    Reply
  129. Liam

    good science live.

    Reply
  130. Aryonna

    very cool I want learn more

    Reply
  131. Alondra

    I learned about the ethernet very interesting. I love the science live videos. Thank you

    Reply
  132. Johnathan

    science live rocks…

    Reply
  133. Tran

    Thank you for information about Ethernet!

    Reply
  134. Ella

    I love all these videos!! Awesome!

    Reply
  135. Sawyer

    Im loving the science videos

    Reply
  136. Daniel

    Thank you for thinking about families who could use help with tuition.

    Reply
  137. Emma

    I really enjoyed learning about how you solved the collision problem – very inspiring!

    Reply
  138. Maura

    I did not know that about the ethernet. Thank you for showing me. Greetings from Maura thanks

    Reply
  139. Orion

    The inner workings of ethernet are so cool!

    Reply
  140. Alexander

    How long did it take to go to the moon for the first time?

    Reply
  141. Brodie

    this is super amazing!!!

    Reply
  142. Tristian

    another great science live

    Reply
  143. Laanna

    every week is always interesting. love watching!!!

    Reply
  144. Kennedy

    This was very interesting!

    Reply
  145. Brooklyn

    nice science live videos this week and last week me and my class watched science live every Wednesday thank you for posting the science live videos

    Reply
  146. Vanessa

    Science live is amazing!

    Reply
  147. Brooklyn

    say that there were two computers wanted to talk to each other its called a packet

    Reply
  148. Casen

    amazing live guys πŸ‘πŸ‘πŸ‘πŸ‘πŸ‘

    Reply
  149. Brantley

    That is amazing love the science live!!!

    Reply
  150. Asher

    I learn so much watching these videos!

    Reply
  151. Milena

    Science live never fails to make me laugh!

    Reply
  152. Ngo

    oh, good science live, ETHERNET!

    Reply
  153. Christian

    Acellus has taught me so much

    Reply
  154. Jadee

    I’m so glad I am part of the Acellus Academy! I hope my school district will look into it because I love it and have friends that I know would love it! Such a great school to be a part of! Thanks Dr. Billings!

    Reply
  155. Ce`torre

    Who doesn’t love science live!?!?🫢

    Reply
  156. Casen

    I think the national cyberschool option is a great idea.

    Reply
  157. Paris

    hi! watching from florida!!!

    Reply
  158. James

    when you talked about hypothesis i actually understood it unlike usual.

    Reply
  159. Isis

    Nice science live this week, thanks!

    Reply
  160. Isis

    Great science live this week, thanks!

    Reply
  161. Jase

    I liked learning about the ethernet. I didn’t really know much about it but I liked how it was explained to help me learn about it!

    Reply
  162. Isaac

    i never new that the internet work like that it like sending mail but you don’t have to wait to see the mail.

    Reply
  163. Timothy

    I’m so glad these stay up. I can go back and rewatch them and show them to my cousin when we have a sleepover.

    Reply
  164. Chloe

    Amazing video as always!

    Reply
  165. Katelie

    Hi from oklahoma science live was cool.

    Reply
  166. Milani

    Hello from CA!
    I enjoy watching the science live! I learned more about the ethernet. Thank you!

    Reply
  167. Fallon

    I like the poem Dr. Billings said that his mom taught him.

    Reply
  168. Brenna

    Incredible science live, thank you for making these.

    Reply
  169. Mary

    I loved learning about the Ethernet!

    Reply
  170. Madison

    The part I love about this live is the collision problem and how you solved it and hypothesis and theories!!

    Reply
  171. Lana

    I enjoyed science live

    Reply
  172. Caleb

    great episode this week

    Reply
  173. Tegan

    I’m so excited for the science fair; It’s going to be amazing

    Reply
  174. Dylan

    haw do you make a coaxial cable?

    Reply
  175. Do

    Science live this week was great. Hope to see everyone next week!^^

    Reply

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