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. Kaitlyn

    I loved watching this!

    Reply
  2. Kingston

    Amazing science live this week! Great work!!

    Reply
  3. Tucker

    What’s an equalizer?

    Reply
  4. Madeline

    Loved the Science Live this week. Great topics.

    Reply
  5. Jocelyn

    Thanks for another great video!

    Reply
  6. Isaacn

    Science wouldn’t be here without Hypotheses!!!

    Reply
  7. Nick

    This live was so awesome!

    Reply
  8. Cerys

    Aloha from Hawaii

    Reply
  9. Na`zir

    Science Live’s are the best! Thank you so much

    Reply
  10. Guri2

    One of my favorite lives

    Reply
  11. Gwangjoo1

    Artemis 2 is cool !

    Reply
  12. Guri3

    From korea here !!!

    Reply
  13. Audrey

    This science live was great. It was interesting to learn about the collision problem and how it was solved.

    Reply
  14. Xander

    this week science live was great as always

    Reply
  15. Zachary

    Another amazing live!!

    Reply
  16. Kaden

    Hello from Iowa

    Reply
  17. Emree

    Loved this episode!

    Reply
  18. Lux

    I love science!

    Reply
  19. Taelyn

    hi taelyn from Iowa thank you for doing this

    Reply
  20. Sophia

    How did Artemis 11 go?

    Reply
  21. Mason

    love the science live this week it was so good.

    Reply
  22. Tyler

    didnt know ethernet was this cool cant wait for next time

    Reply
  23. Nolan

    Amazing Science Live this time around! Ethernet was interesting to hear about.

    Reply
  24. Londyn

    A billion bits per second is crazy! I really enjoyed learning in this video!!!

    Reply
  25. Sidney

    Sorry im so late ive been so sick but the live from Wednesday was absolutley amazing!! *

    Reply
  26. Raegan

    I really enjoyed watching this science live!

    Reply
  27. Ian

    I wish could see how the first version of ethernet worked.

    Reply
  28. Chloe

    The Collision problem is so interesting. It’s so cool how kinetic energy is persevered, and depending on the impact it’s large or small mass that bounces back! And how if objects stay together the kinetic energy is lost.

    Reply
  29. Emberlee

    This is a beautiful lesson! Keep up the great work and continue with the lessons. I sure do love science live!

    Reply
  30. Lucas

    enjoyed the science live this week

    Reply
  31. Joby

    The fact that you are able to have 3x times faster internet speed just by being plugged into the router is awesome to me.

    Reply
  32. Aaron

    Great Live this week!

    Reply
  33. Justin

    How many gigabytes make up a zetabyte?

    Reply
  34. Levi

    Collision is such a cool word to me idk why

    Reply
  35. Aria

    this episode was very interesting I loved it:)

    Reply
  36. Selina

    I loved when you talked about your hypothesis

    Reply
  37. Logan

    Thank you for the science live.

    Reply
  38. Lexi

    I love watching this video

    Reply
  39. Dustin

    Great Live This week .

    Reply
  40. Kezia

    Hi, ready to learn something new tonight!

    Reply
  41. Yzell

    I loved this one so much!!

    Reply
  42. Kayson

    Great live! The ethernet has been worked on to perfect the internet and so much more

    Reply
  43. Isabella

    Hi from Texas!!!!!!

    Reply
  44. Marlon

    Very interesting! Thank you.

    Reply
  45. Nguyen

    So cool to hear about the ethernet!!

    Reply
  46. Isaiah

    i loved the video

    Reply
  47. August

    Have an amazing week everyone!

    Reply
  48. Alena

    sorry i watched it late but thank you!!!

    Reply
  49. Maya

    Amazing and informational science live this week!

    Reply
  50. Ava

    love these science lives!

    Reply
  51. Christopher

    Ethernet is so awesome if we did’t have it I would have to write a letter or go to his house every time I would want’t to see him or talk to him.

    Reply
  52. Loretta

    I love Mr Roger’s

    Reply
  53. Makenna

    These are cool

    Reply
  54. Jack

    thank you dr billings for creating better ethernet

    Reply
  55. Sienna

    Loved this live! Thank you!

    Reply
  56. Jada

    Watching from south carolina

    Reply
  57. Megan

    This is so cool!

    Reply
  58. Joseph

    I really enjoyed this weeks episode and learning about the collision problem.

    Reply
  59. Lauren

    I love Science Live!

    Reply
  60. Robin

    Great Science Live this week, Thank you!

    Reply
  61. Maycee

    Ron Crane is really smart how did they figure that out?

    Reply
  62. Mila

    I think it is amazing that Artimis II will go around the moon!

    Reply
  63. Ella

    What makes the jellyfish effect when some rockets get launched?

    Reply
  64. My

    I love Science Live!

    Reply
  65. Emilia

    It was interesting learning about Ethernet

    Reply
  66. Alessandro

    If the boxes are going to have a collision, what if it malfuctions?

    Reply
  67. Kennedi

    this is so fun to watch!! loved it!!!

    Reply
  68. Greah

    I love science !!!!!!

    Reply
  69. Finn

    Jillions of inventioneers!

    Reply
  70. Abigail

    I love how anyone can be a scientist if they use hypothesis and theories! I love science live!!

    Reply
  71. Aiden

    Hello from Florida.

    Reply
  72. Christopher

    I love the lives.

    Reply
  73. Madison

    I love these videos

    Reply
  74. Musab

    Nice science live this week!

    Reply
  75. Hailey

    Super interesting subject I loved this

    Reply
  76. Ella

    I really loved science live this week!

    Reply
  77. Cristian

    Ethernet tech is so cool.

    Reply
  78. Cole

    this is so cool

    Reply
  79. Aidano

    Does the the military gets their inventions from the public, or vice versa?

    Reply
  80. Chelsea

    Computers are so cool

    Reply
  81. Alecia

    I LOVE watching the science lives

    Reply
  82. Julian

    This is one of my favorite episodes.

    Reply
  83. Jordan

    science live videos are great to watch.

    Reply
  84. Zoe

    Loved this episode.

    Reply
  85. Marley

    loved this so much thank you guys for going out of your way to do these even though its your job

    Reply
  86. Payton

    This week’s video is so cool!!

    Reply
  87. Brandon

    Hi from New Jersey!

    Reply
  88. Ursula

    My favorite part of the day!

    Reply
  89. Sofia

    I really enjoyed this video.

    Reply
  90. Sophia

    Such great videos, watching from Texas!

    Reply
  91. Madisyn

    It was cool to learn about Ethernet!

    Reply
  92. James

    The internet and how it works is amazing.

    Reply
  93. Kamilla

    Awesome Live this week!! Thank you!

    Reply
  94. Tran

    Great science video for new week!

    Reply
  95. Milo

    Very interesting as always

    Reply
  96. Jayden

    Science Live was so much fun this week I really enjoyed this one!!!

    Reply
  97. Andi

    i’m so sorry I missed two weeks of science live I was really busy Florida

    Reply
  98. Kendyl

    science live was great !

    Reply
  99. Andi

    so sorry for missing two weeks aside
    . live I was really really really really, really busy Florida

    Reply
  100. Trayton

    I enjoyed science live. Thanks

    Reply
  101. Kevin

    Another fantastic Science Live, thanks Acellus crew!

    Reply
  102. Jacob

    Thank you for the science live videos!

    Reply
  103. Yaretzi

    I loved this video!!! Science is always so interesting!

    Reply
  104. Bucheon2

    Great class this week

    Reply
  105. Guri1

    Science is amazing

    Reply
  106. Kids

    You guys are really smart

    Reply
  107. Jace

    Great episode very excited for the next one

    Reply
  108. Urijah

    Science is my favorite subject. I love this tune into these.

    Reply
  109. Gianna

    The science lives are so interesting and cool to learn

    Reply
  110. Jordan

    Great Science Live this week, thank you!

    Reply
  111. Anistyn

    Loved this video this week!

    Reply
  112. Gaige

    I loved learning about the microchip.

    Reply
  113. Kaylin

    Science live is always so cool! This one was great! I cant wait for next weeks episode!

    Reply
  114. Nathan

    Thank you for the video this week, i enjoyed it.

    Reply
  115. Stephanie

    I am so tired. My grandma passed and my family and me just did a long drive. But I still love science live. I think how you solved it is pretty cool. I am going to bed now good night.

    Reply
  116. Jacob

    Good video. I learned some stuff I didn’t know Thanks.

    Reply
  117. Anna

    Thank you for teaching us about Ethernet cables and the internet

    Reply
  118. Jillian

    Here from Texas!

    Reply
  119. Kimberlie

    I enjoyed this weeks Science Live. Thank you.

    Reply
  120. Lathem

    This is so cool! Learning about networks is awesome!

    Reply
  121. Raya

    I wish there was a way to check the students’ side of things to see if I’ve received credit for Science Live. Because of the generation my parents grew up in, they struggle a lot with technology, and so they rely on me to relay info to them. Please, Acellus, please make something so I can check if I’ve received credit or not. Thanks!

    -Raya

    Reply
  122. Savannah

    Keep up the hard work I love these so much.

    Reply
  123. Victor

    hi this live is great and I like how you explained the video

    Reply
  124. Michael

    this was really interesting

    Reply
  125. Joslyn

    I love science live

    Reply
  126. Joslyn

    great science live this week!!

    Reply
  127. Abigail

    Cool Science Live!

    Reply
  128. Myles

    I like learning how we can solve a collision from crashing.

    Reply
  129. William

    Awesome science live! It’s always an awesome time to watch!

    Reply
  130. Liberty

    Science Live Here I Come!

    Reply
  131. Aria

    Here in from the Lone Star State 😉

    Reply
  132. Eldric

    Why is Ethernet called Ethernet ?

    Reply
  133. Cameron

    This was so cool!

    Reply
  134. Angela

    I loved Artemis 2!

    Reply
  135. Killian-peter

    I love it this is great this is the best of the week

    Reply
  136. Sophia

    heyy I loved learning about the hypothesissss

    Reply
  137. Ariana

    Loved this weeks episode!

    Reply
  138. Lucas

    Hi, from Houston

    Reply
  139. Alexa

    I wonder how many years it took to create the Ethernet??

    Reply
  140. Delancey

    I loved this video.

    Reply
  141. Julietta

    This is AWSOME I was so intrigued by the thumbnail!

    Reply
  142. Jonathan

    i love watching every single week!!!

    Reply
  143. Owen

    The Artemis trip was pretty cool.

    Reply
  144. Jonathan

    great episode! much thanks guys!

    Reply
  145. Brandon

    Science live is so cool!

    Reply
  146. Dalyn

    I love science live

    Reply
  147. Danica

    hi from north carolina!

    Reply
  148. Isabella

    This is very intresting and I’m glad I got to watch it

    Reply
  149. Sofia

    Have you found R-51 yet? I hope he is ok.

    Reply
  150. Connor

    Woahh Ethernet is cool! 😀

    Reply
  151. Daegu6

    I liked this part! Who made Ethernet?

    Reply
  152. Cezaria

    Wow these lives are always great!

    Reply
  153. Lkang-ann

    What are some new classes we can look forward to in the future?

    Reply
  154. Tyler

    It’s so cool learning new things!!

    Reply
  155. Trenton

    i loved when you talked about hypothesis and theories your so smart and awesome

    Reply
  156. Peter

    great science live.

    Reply
  157. Maryam

    Hi I am from NC

    Reply
  158. Elena

    It’s funny how someone told you for 3 hours that an idea wouldn’t work, but then he almost took credit for it. Also I hope R-51 comes back soon.

    Reply
  159. Danil

    hello from tennessee

    Reply
  160. Michael

    I love learning science.

    Reply
  161. Olivia

    Thank you for teaching about the ethernet!

    Reply
  162. Olivia

    I hadn’t heard about Ethernet before, very cool

    Reply
  163. Jonathan

    Thank you for the live

    Reply
  164. Pohang6

    I learned something new! What is Cat5?

    Reply
  165. Pohang6

    I liked this lesson! What if too many packets come?

    Reply
  166. Kirklynn

    I love Science Live!

    Reply
  167. Pohang3

    This was fun! Is WideBand faster?

    Reply
  168. Wyatt

    amazing science live its pretty cool

    Reply
  169. Scarlett

    I love science live!

    Reply
  170. Haiden

    this live was very cool :>

    Reply
  171. Julio

    science live is the best

    Reply
  172. Eion

    Very interesting as always, I love it .

    Reply
  173. Pohang3

    This was interesting! Is networking like roads?

    Reply
  174. Caleb

    The information that sicence live provides is unbelievable!

    Reply
  175. Peyton

    Its interesting to see how far the technology has come!

    Reply

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