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 — 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 — 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 — 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 — 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 “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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5,043 Comments

  1. Matias

    We learned a lot this science live!!

    Reply
  2. Egypt

    I really appreciate all the diagrams and examples used to help explain ethernet. It is really helpful, especially to a visual learner.

    Reply
  3. Jaxen

    artemis 2 is so cool!

    Reply
  4. Kailyn

    Very entertaining! Cant wait for next week’s!

    Reply
  5. Kelvin

    The Ethernet is so cool!

    Reply
  6. Noah

    Hello from Washington

    Reply
  7. Makiyah

    hi i love your videos from California.

    Reply
  8. Iker

    I like the fact that they always have some fun but interesting facts. I love Acellus!!

    Reply
  9. Kobe

    Hello, from Tennessee!!!!1

    Reply
  10. Eliza

    this science live was amazing ethernet cords are essential to internet

    Reply
  11. Kai

    Wow another great science live!

    Reply
  12. Elijah

    The knowledge that the Astronaut is using to go too the moon is remarkable.

    Reply
  13. Alezandria

    Hello, I’m from Texas and I love science life I’m so excited for what they’re gonna be teaching us today

    Reply
  14. Carson

    loved the show to night!!!

    Reply
  15. Jayden

    I love science live

    Reply
  16. Ryland

    Mr. Billings seems like a very interesting person and has had a lot of accomplishments, it is pretty cool!

    Reply
  17. Katie

    Thanks for putting the lives on YouTube so we can watch it later if we miss it

    Reply
  18. Marchay

    I would like to learn more about the internet.

    Reply
  19. Jeyni

    I love these science lives!

    Reply
  20. John

    When was the project started?

    Reply
  21. Isaac

    Very interesting this week.

    Reply
  22. Kristian

    Learning about the internet was very interesting! This is my favorite live yet.

    Reply
  23. Halo

    I wanna know how long does it take to fix an Ethernet collisions? Loved live today!

    Reply
  24. Jessiah

    Hello from Georgia

    Reply
  25. Jude

    Science live is so fun!!

    Reply
  26. Karter

    this live was awesome im gonna rewatch atemis2 launch to look at everying great live

    Reply
  27. Brian

    Love your videos

    Reply
  28. Edith

    I never understood how Ethernet worked, Thanks!

    Reply
  29. Ava

    My first time here!

    Reply
  30. Hailey

    I love acellus.

    Reply
  31. Alexis

    This was probably my favorite live yet! I can’t wait for next week’s!

    Reply
  32. Jailon

    10000000/10

    Reply
  33. Nanette

    I love R51

    Reply
  34. Keinnan

    I just do not get how someone comes up with things like this

    Reply
  35. Caden

    Acellus is a lot better then being in school

    Reply
  36. Daijah

    I love these videos. They’re awesome.

    Reply
  37. Annabelle

    Love the prototype for collision problems, hopefully in the future it helps avoid more problems!

    Reply
  38. Jeremy

    Extraordinary live session! I learned so much!

    Reply
  39. Alexis

    This is so incredible it makes me love to learn!

    Reply
  40. Dequincy

    Roger Billings is the coolest

    Reply
  41. Addison

    heyy from SC

    Reply
  42. Myla

    The Ethernet cable really interested me and the Network technology was very cool.

    Reply
  43. Aiden

    Aiden from Nevada! Interesting video!

    Reply
  44. Gabrielle

    Thank You Acellus, as always I love that I learn new exciting things every SCIENCE LIVE!!!

    Reply
  45. Caiden

    Comment hello from Illinois

    Reply
  46. Marquise

    Very thankful for this program

    Reply
  47. Braelyn

    this is so cool!! I love hearing his stories !!

    Reply
  48. Lynne

    I have never heard of Ethernet until now

    Reply
  49. Vincent

    I love this episode. It was very interesting and I learned so much!!

    Reply
  50. Marly

    Another week of great science

    Reply
  51. Kaylei

    Good evening from Texas

    Reply
  52. Jacob

    oops sorry im late!!! non the less im still very excited

    Reply
  53. Anneliese

    Thank you for a little bit of r51

    Reply
  54. Natalie

    Hi fromFlorida

    Reply
  55. Taylor

    hi from Nevada!!!!!!

    Reply
  56. Marquis

    Hello everyone from Mississippi

    Reply
  57. Caiden

    I love to watch this thank you mr billings!!

    Reply
  58. Trinitee

    Hii from Virginia!

    Reply
  59. Noah

    How many computers can talk to each other at the same time?

    Reply
  60. Dominic

    This science live really sparked my interest, loved it!

    Reply
  61. Audrey

    I love these videos every week!

    Reply
  62. Nalah

    I love science live! This lesson was so fun. Thank you for teaching me all this fun stuff.

    Reply
  63. Grant

    1the baseball thing was funny

    Reply
  64. Emily

    Love this one!!

    Reply
  65. Johnathan

    this video was very informational thank you

    Reply
  66. Jacob

    i love drb

    Reply
  67. Edgar

    This episode was so good!!

    Reply
  68. Zander

    That is so different to use the phone to send an email.

    Reply
  69. Eliana

    Really cool. So glad I watched this.

    Reply
  70. Augustus

    Science live is awesome.

    Reply
  71. Gavin

    I love this live!!! It’s made me love science even more !

    Reply
  72. Aiden

    i really love science live it is literly the best the ever made 10 out of 10 would recemend

    Reply
  73. Naomi

    I love Acellus!!

    Reply
  74. Breana

    love this live! so much informational news.

    Reply
  75. Adrik

    That was a very entertaining episode. I look forward to hearing more about your time spent with Ron crane in the next one and I will keep my eye out for R-51.

    Reply
  76. John

    How long does it take to solder all the parts?

    Reply
  77. Shelby

    this was amazing live the ethernet is amazing

    Reply
  78. Josiah

    Congratulations on figuring out a way to make Ethernet work and more than double its speed!

    Reply
  79. Ava

    I enjoyed learning about Ethernet.

    Reply
  80. Bella

    I really hope i can go to the science fair next year! :]

    Reply
  81. Zhoeylynn

    This is super cool!

    Reply
  82. Chasity

    Great, wow, just amazing!

    Reply
  83. Kaci

    Great Episode! Loved learning about Ethernet and the changes it made for the technology world! Can’t wait till next time!

    Reply
  84. Sophia

    Back again for another video!

    Reply
  85. Andy

    this is why more people need to learn about science. Who know what will happen next .!

    Reply
  86. Bella

    This was so fun to watch! he looks like a great man.

    Reply
  87. Maximos

    first science live. happy to be here

    Reply
  88. Reed

    Great episode, the Ethernet cable is an epic invention, and the circuit Dr. john and his crew created sounds like an awesome protype to use for collision problems.

    Reply
  89. Jaxon

    Fun and interesting video

    Reply
  90. Jaidah

    Hello, from MT. excited to watch this live

    Reply
  91. Carter

    I really enjoyed this live a lot! I like hearing Mr. Billings stories

    Reply
  92. Peyton

    I really liked this live it was interesting

    Reply
  93. Addilyn

    wow todays live was so cool!!!

    Reply
  94. Kailee

    I am almost done with my freshman year and I can say Acellus is the best!!!

    Reply
  95. Lorenzo

    Very cool project and info about what debugging is.

    Reply
  96. Ava

    Loved this live !!! From mississippi.

    Reply
  97. Kenneth

    This live was pretty rich with info in my opinion, keep it up!

    Reply
  98. Jaelynn

    The live made me understand how after time Ethernet was developed and how we use it in today’s world. I really love this live

    Reply
  99. Lorenzo

    Prodigies and it is cool that we can watch it on YouTube. Great idea.👍👍

    Reply
  100. Elizabeth

    Oh I love to be part of the NASA program someday.

    Reply
  101. Kinley

    Love hearing all those stories!

    Reply
  102. Eleanor

    Cool Science Live, keep it up!!

    Reply
  103. James

    It is crazy us much human beings take for granted

    Reply
  104. Markese

    This was my favorite episode! thank you for teaching me about the ethernet

    Reply
  105. Parker

    Thank you for the interesting live!

    Reply
  106. Lilliana

    loved the video so much !

    Reply
  107. Mathew

    hiii from tenneessee

    Reply
  108. Oaklee

    Great science live

    Reply
  109. Zainab

    I always love science live!!

    Reply
  110. Tatum

    I liked this science live!

    Reply
  111. Autumn

    I’m glad that you all are teaching us more about things like ethernet!

    Reply
  112. Madison

    I liked learning about the ethernet for our internet.

    Reply
  113. Grace

    That’s so interesting that you had to use physical phones to call the person you wanted to email and then had to put your phones on a modem at the same time in order to send the device. How cool!

    An idea for Mr. Billings invention. How about headlights that auto turn on and off the bright lights when driving so people don’t accidentally blind each other when driving at night? We already have headlights that work automatically, what if we had the same concept but for head lights that work for bright lights only?? I think it would help prevent so many collisions.

    Reply
  114. Ameliea

    it was interesting to hear about how you could come up with an invention and talk about it, but then somebody else would maybe take your idea. But to not be upset or give up, but just to keep on going and make an even better version.

    Reply
  115. Sarah

    hi from tx

    Reply
  116. Bryce

    Learning about the Ethernet was really interesting

    Reply
  117. Rylee

    What happens when the FIFO gets full?

    Reply
  118. Layla

    So cool to think about how much people have developed technology!

    Reply
  119. Kiernan

    This was super interesting!! these lives are truly fascinating

    Reply
  120. Kaitlin

    Loved the Live! Internet was being buggy though.

    Reply
  121. River

    favorite part of my week!

    Reply
  122. Lincoln

    how did the etrernet become the internet

    Reply
  123. Easton

    The Artemis 2 launch was so cool!

    Reply
  124. Aiden

    Comment very informative, as always

    Reply
  125. Ava

    science live always has interesting facts

    Reply
  126. Jeffrey

    Hello from north carolina

    Reply
  127. Angeline

    Great Video as always!

    Reply
  128. Callie

    That was a awesome live

    Reply
  129. Russ

    Very interesting Science Live! I learned a lot about the ethernet.

    Reply
  130. Jace

    hello from MO!!

    Reply
  131. Aiden

    This Science live was great!

    Reply
  132. Tiara

    I loved watching today live

    Reply
  133. Kyra

    Wow very cool very interesting science live today, I cant wait for next week!

    Reply
  134. Emma

    The Ethernet cable is such an interesting invention!

    Reply
  135. Colt

    I can’t wait to watch science Live!

    Reply
  136. Brooklyn

    Thanks Dr B

    Reply
  137. Easton

    Good episode. Have been watching Artemis.

    Reply
  138. Brooklynn

    This was a very interesting episode.

    Reply
  139. Bentley

    love watching every wednesday

    Reply
  140. Annaleesa

    I love science live!!!!!!!!!!!!!

    Reply
  141. Teagin

    Thank you for another interesting Science Live.

    Reply
  142. Samuel

    Thank you for teaching me the history of ethernet! Columbia SC

    Reply
  143. Tristan

    We watched the artimis launch on the tv:)

    Reply
  144. Lily

    I hope r51 has fun while he’s on the wing.

    Reply
  145. Jameson

    This science live was so cool

    Reply
  146. Cora

    I love watching Science Live. What does Roger Billings have in store?

    Reply
  147. Brody

    Hi, Brody from Minden, NV. I can’t believe I’m almost done with 6th grade

    Reply
  148. Lane

    how much money is it cost to go to the moon?

    Reply
  149. Mylah

    I love this science liveee!!

    Reply
  150. Saydee

    i love being a part of acellus its so fun

    Reply
  151. Luca

    hello from Arkansas

    Reply
  152. London

    I look forward to science live every single week!

    Reply
  153. Oaklee

    I love this video it was so cool

    Reply
  154. Brady

    Hi from Michigan!!!

    Reply
  155. Emilio

    I love science even more when I watch these videos!

    Reply
  156. Amanda

    It’s nice to know that there are still tons of cool things that are being done with science!

    Reply
  157. Madison

    I enjoyed this video

    Reply
  158. Lourdes

    Can you do a science live featuring thylacines?

    Reply
  159. Ryleigh

    This was such a good episode!

    Reply
  160. Jasmine

    so interesting I loved this science live! Can’t wait for the next one

    Reply
  161. Giuliana

    Wow this was all super cool!

    Reply
  162. Austin

    Hi from Kentucky!

    Reply
  163. Eddie

    Very interesting and nice video! Can’t wait for the next one.

    Reply
  164. Tessa

    I too enjoy the science of this live.

    Reply
  165. Illiana

    Wow I didn’t know that!

    Reply
  166. Queen

    How has the ethernet of today affected us? More specifically, how has our current ethernet benefited us? For example, is it because of its flexibility with different devices? If so, is this a major reason why we are more easily able to communicate with each other?

    Reply
  167. Samuel

    the artemis 2 launch was crazy i was really exited when it went to space. i LOVE space.

    Reply
  168. Maddison

    10/10

    Reply
  169. Jacob

    Loved it can’t wait for more.

    Reply
  170. Larahlyn

    Live today was so cool!

    Reply
  171. Joseph

    Love the lives so much

    Reply
  172. Josiah

    This is so interesting! I love watching these science lives!!

    Reply
  173. Shaylie

    Loved this episode!!

    Reply
  174. Aurora

    Hello from Georgia!

    Reply
  175. Nicholas

    I look forward to science lives!

    Reply

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