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. Juniper

    What all components go into building that board?

    Reply
  2. Emma

    Can’t wait for next weeks video

    Reply
  3. Landon

    I enjoyed learning about ethernet!

    Reply
  4. Kyle

    That was a great explanation of what the ethernet is. I actually understand it finally.

    Reply
  5. Austin

    New program is amazing and would help my family in so many ways. I love that and I am excited to be here.

    Reply
  6. Kingston

    I like watching them solve problems!

    Reply
  7. Scarlett

    HOW DO YOU BLOW MY MIND EVERY SINGLE TIME?!

    Reply
  8. Peyton

    the solution of a collision problem is very interesting

    Reply
  9. Aiden

    To think of all of the tech and inventions that were made for me to just type a single Google message is incredible!

    Reply
  10. Dalton

    awesome presentation goat

    Reply
  11. Lawren

    watching from Texas! love these science lives!!

    Reply
  12. Julyanna

    Great Science Live!

    Reply
  13. Ayden

    Can we name the comet lucky.

    Reply
  14. Aubrie

    I loved this live might be my favorite so far! Can’t wait for the next one!!

    Reply
  15. Londyn

    How long did the vampire tap take?

    Reply
  16. Jacen

    I’m glad I’ve got internet vs Ethernet.

    Reply
  17. Christopher

    It was fun learning about the Ethernet!

    Reply
  18. Israel

    I’m curious, when and why was toilet paper invented?

    Reply
  19. Sihi

    It’s really interesting on the history of Ethernet, this is my favorite video so far!

    Reply
  20. Lawren

    Watching from Texas!

    Reply
  21. Kiera

    My family and I watched Artimis II take off and then we also got to watch the landing. It was very cool.

    Reply
  22. Meghan

    I think it’s so cool how computer science has advanced!! I also thought Cat 5 cables were really cool!!

    Reply
  23. Braxton

    I love learning about the ethernet. Before this video I didn’t know what the internet was.

    Reply
  24. Jack

    These are all very interesting videos and I hope to see more of them.

    Reply
  25. Ava

    R51 is so comical

    Reply
  26. Chosen

    Hello from Halifax, Nova Scotia! I love Science LIVE!!

    Reply
  27. Alexis

    How did you figure out how to solve the collision problem?

    Reply
  28. Lexi

    I love R.51 its my favorite part of science live

    Reply
  29. Alexander

    My dad usues an Ethernet cable for his computer for work. Thanks for teaching this subject.

    Reply
  30. Benjamin

    the ethernet is so cool

    Reply
  31. Daniela

    Ron Crane was a true genius!

    Reply
  32. Kenlei

    Great live, cant wait for the next one.

    Reply
  33. Cade

    Loved this one

    Reply
  34. Peyton

    I love watching science live!

    Reply
  35. Paul

    isacc newtons invintions were very intresting.

    Reply
  36. Memphis

    The launching of Artemis 2 was so cool! I loved the picture where you could see the earth and the moon in the same picture.

    Reply
  37. Matthew

    I love Science Live

    Reply
  38. Waylon

    Ethernet is cool!

    Reply
  39. Tate

    It’s so cool that astronauts are going to the moon!

    Reply
  40. Johnny

    This was by far one of my favorite episodes

    Reply
  41. Preston

    It was really cool learning how Ethernet came about.

    Reply
  42. Mia

    Great live super interesting about the Ethernet! Can’t wait for the next live.

    Reply
  43. Shalym

    Can’t wait for the next one!

    Reply
  44. Zoey

    i love this program

    Reply
  45. Quinn

    Science lives are so fun

    Reply
  46. Rosina

    This weeks video was amazing!!

    Reply
  47. Emma

    I liked learning about the Ethernet!

    Reply
  48. Annerie

    I took a lot away from this Science Live episode, and if I had to pick one out of all the other fascinating subjects speakers Roger Billings and Dr. Tobias spoke about, it would be learning that early Ethernet was so collision-prone that if, hypothetically speaking, a group of people were to be talking over each other on one phone line, only one of them could be understood. Its so mind boggling!

    Reply
  49. Abbie

    Love this one!! so excited for the next!! Loved learning no and hearing about Ethernet!

    Reply
  50. Mateo

    Mr. Billing’s stories are very interesting!! I love Science Live.

    Reply
  51. Cj

    There are a lot of brilliant inventions and minds in our world.

    Reply
  52. Gabriella

    I enjoyed the part about learning about the ethernet and the collisions with computers

    Reply
  53. Billy

    space is very cool

    Reply
  54. Abigail

    This was a really cool episode!

    Reply
  55. Julio

    It’s really amazing how far ethernet has come with its insane Wi-Fi speeds we have today compared to back then. Using barbed wire is also crazy!

    Reply
  56. Chayson

    It is just so wild how everything is connected and worked together to make the amazing ethernet!

    Reply
  57. Abigail

    That’s so cool!

    Reply
  58. Emma

    It is so good

    Reply
  59. Draven

    thank you for the amazing video

    Reply
  60. Conner

    Every science live is always a joy to watch!

    Reply
  61. Clelia

    R 51 is plotting his escape trust

    Reply
  62. Julio

    I’ve always wondered how ethernet worked especially how much it boosts the Wi-Fi speeds on computers so this was definitely interesting for me. Going as far as to use barbed wire is also crazy.

    Reply
  63. Elijah

    Why haven’t we reviewed past inventions sooner if they still have a chance to benefit society?

    Reply
  64. Lane

    How was ethernet made?

    Reply
  65. Noah

    That’s really cool how far we’ve come!

    Reply
  66. Sidney

    What was the time limit for when there was a collision, and they had to wait a random time to see the message?

    Reply
  67. Simran

    So many interesting things to learn from this science live!

    Reply
  68. Sutton

    I love Acellus and what there trying to do for families that are struggling.

    Reply
  69. Coralai

    the ethernet is interesting

    Reply
  70. Quinlan

    The R-51 clip was hilarious!

    Reply
  71. Casey

    I love science lives!!!!

    Reply
  72. Landon

    The new scholarship program loos exciting

    Reply
  73. Jack

    What there sending more people to land on the moon

    Reply
  74. Jeremiah

    I never knew that packets were that simple, I always thought that they were way too complicated for me to understand. Super cool!

    Reply
  75. London

    That is really great news for families like mine that have all my brothers enrolled here. That would really help so much. Thank you so much for always thinking of ways to help us and our parents.

    Reply
  76. Nathan

    The barbbed wire was so cool!

    Reply
  77. Baylor

    I love science live!

    Reply
  78. Nicholas

    As always another fire episode from science live!

    Reply
  79. Sabreena

    This has NOTHING to do with this episode but how’s Jeffry? 🐍🐍🐍?

    Reply
  80. Julianna

    Great episode! The proteges were really good.

    Reply
  81. Hanan

    Love this video!

    Reply
  82. Ainoah

    It’s crazy to think about how technology developed over time. It’s interesting to realize that the world started off no existing technology, and all of a sudden we have things like phones, ipad, and personal computers. Over time we improved from having no technology to advanced technology that we use in our daily lives!

    Reply
  83. Blaize

    Thank you for doing Science Live!

    Reply
  84. Annalise

    I love science live!

    Reply
  85. Emma

    These are great!

    Reply
  86. Abigail

    the ethernet was so intriguing, i was genuinely starstruck lol

    Reply
  87. Niah

    I love you are 51. You are so good and you never waste time. Thank you.

    Reply
  88. Landon

    I didn’t know Internet was just a road with collisions and everything.

    Reply
  89. Brayden

    Cool to see! Ready for the next one.

    Reply
  90. Victoria

    I knew nothing about the ethernet until now!

    Reply
  91. Isabella

    Thank you for this video!

    Reply
  92. Sebastian

    Great Science Live!

    Reply
  93. Ainoah

    It’s crazy to think about how technology developed over time. It’s interesting to realize that the world started off with no existing technology, and all of a sudden we have things like phones, ipad, and personal computers. Over time we improved from having no technology to advanced technology that we use in our daily lives!

    Reply
  94. Macksyn

    Ethernet has advanced so much from just what I know and have learned here and with what my mom has told me from since she was a kid.

    Reply
  95. Autumn

    I wonder how they lived without internet in the back then.

    Reply
  96. Zelenay

    Wonderful live! I learned more than I expected

    Reply
  97. Sophia

    One of my fav lives

    Reply
  98. Radley

    Very intriguing live! Cant wait for the next!

    Reply
  99. Brayden

    Thank you for always having interesting videos.

    Reply
  100. Abigail

    awesome and educational video!

    Reply
  101. Clara

    I loved learning about scienece and a little bit about NASA would love to learn more about it! and also I found it really interest all the new thing that we can learn about Ethernet.

    Reply
  102. Grayson

    I watched with my siblings earlier. Just posting to get credit. I do like the R-51 guy. He’s cool and makes me laugh.

    Reply
  103. Giovanni

    I cant wait to invent something !

    Reply
  104. Marie

    I’m not really that interested in how computers work. But you made it more interesting for me. Thank you

    Reply
  105. Keira

    Thanks for the great info.

    Reply
  106. Linnea

    thats awesome that Dr Billings solved the Ethernet problem

    Reply
  107. Reese

    Can’t wait for next week!

    Reply
  108. Elizabeth

    I LOVE LEARNING FROM YOU AND THE PROSHGES AND ON SCIENCE LIVE. I LOVE LEARNING ABOUT THE ETHERNET

    Reply
  109. Hudson

    I love science live!

    Reply
  110. Zailey

    I hope that in 2028 the astronauts land safely on the moon!

    Reply
  111. Lizzie

    Does anybody read these?????? Comment if you do!!
    SCIENCE LIVE IS AMAZING!!!!!!!!

    Reply
  112. Joseph

    its so cool that people make thing that help people.

    Reply
  113. Pablo

    Comment learning about the Ethernet was super fun, this science live was good

    Reply
  114. Izaiah

    very cool thank you!

    Reply
  115. Kade

    Science live is good

    Reply
  116. Kiley

    you explain this so well

    Reply
  117. Benjamin

    hope the arduinos hit the gold store!

    Reply
  118. Justin

    I liked learning about the Ethernet, very interesting. I enjoyed the whole program.

    Reply
  119. Hayden

    science live is the best

    Reply
  120. Kale

    It is great to hear how much you guys care about the community and want to give everyone the chance to be able to use Acellus.

    Reply
  121. Alexa

    Thanks for keeping us up to date with the FIFO system. I didn’t know much about Wideband’s technology or about collision elimination before and am always eager to educate myself!

    Reply
  122. Cassie

    The ethernet stuff was cool, I didn’t really know much about it before!

    Reply
  123. Peyton

    Who came up with Ethernet and how was it discovered

    Reply
  124. Clark

    hi from texas

    Reply
  125. Lizzie

    Tuning in from Missouri, about an hour from the Acellus headquarters!!!!!!!

    Reply
  126. Lily

    Tuning in from Colorado

    Reply
  127. Cameron

    I really enjoyed learning about the Ethernet!! Love Science Live and always learning something new!!

    Reply
  128. Derek

    Heloo from texas!

    Reply
  129. Serenity

    I love watching these videos!

    Reply
  130. Annika

    Wow Acellus is so cool.

    Reply
  131. Alexis

    I enjoyed this video

    Reply
  132. Frank

    This is so cool!

    Reply
  133. Morgan

    I love science live

    Reply
  134. Charles

    My mom taught me FIFO for food in the refrigerator and pantry.

    Reply
  135. Kassandramejivar

    science is so cool

    Reply
  136. Alexa

    Another awesome episode! I really enjoy Science Live!

    Reply
  137. Alexis

    Awesome Live video!

    Reply
  138. Abigail

    Why did Ron Crane decide to go to Xerox?

    Reply
  139. Daniel

    Favorite video so far!

    Reply
  140. Aisley

    It was so interesting learning about the Collision problem.

    Reply
  141. Isabella

    I love Wednesdays because of Science Live

    Reply
  142. Owen

    I love it!!!!

    Reply
  143. Brent

    I love science live and I’m a cowboy

    Reply
  144. Alyssa

    i have always thought about how the Ethernet travels

    Reply
  145. Ashlynn

    I just started Acellus and I love it!

    Reply
  146. Micah

    I really like science live.

    Reply
  147. Shelby

    Loved the Video!

    Reply
  148. Andrew

    I really wanna learn more about the Ethernet, I’ve always had one plugged into my computer but I never knew really what it was. Im extremely happy to learn more about it!

    Reply
  149. Rheagan

    the internet is so crazy!

    Reply
  150. Maxwell

    I enjoyed learning about the Ethernet!

    Reply
  151. Daniel

    Thank you for your wonderful science live presentations, it actually pretty entertaining not going to lie 🙂

    Reply
  152. Karsyn

    I really love the Science Live today !!

    Reply
  153. Rheagan

    I love science live

    Reply
  154. Taylin

    These are always so interesting!

    Reply
  155. Henli

    Wow I really enjoyed this live!

    Reply
  156. Dylan

    thanks for this week’s video

    Reply
  157. Charlotte

    Who created wifi and internet?

    Reply
  158. Charlie

    It was fun learning about Ethernet. I love watching Science LIVE.

    Reply
  159. Bergen

    These videos are my favorite to watch!

    Reply
  160. Logan

    science live was great

    Reply
  161. Lucas

    the “ether net” is very interesting

    Reply
  162. Erin-rae

    Thank you for the amazing video

    Reply
  163. Piper

    We need mister Todd!

    Reply
  164. Weston

    My mom has told me about the dial up internet they used to have. All the talk about ethernet made me think about it.

    Reply
  165. Cody

    its always so cool to watch this

    Reply
  166. Carter

    I like hearing about the different inventions.

    Reply
  167. Mason

    I loved learning this week! Can’t wait till the next one!

    Reply
  168. Bentley

    This was neat to learn about.

    Reply
  169. Bentley

    R-51 is always funny.

    Reply
  170. Charisma

    4th science live, I love these!

    Reply
  171. Layla

    Cant wait to join tonight.

    Reply
  172. Khloe

    I love science

    Reply
  173. Udanhti-ama

    It was very interesting learning about the Coaxial Cable and how they fixed the problem with collision problem.

    Reply
  174. Kylor

    i love learning about this

    Reply
  175. Jan

    Its amazing how the Ethernet Packet works and its great how they explained it. How did people work around those collisions especially when there was hundred of computers? Its great how technology has improved.

    Reply

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