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

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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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1,459 Comments

  1. Derrick

    Dr. Billings,
    My family started watching science live because I had to leave my school and my mom couldn’t afford the full tuition. At first I wasn’t so excited. But it has become a family event. My big brothers and adults cousins have been coming over to watch it with me and mom and talk about it together. It been really fun and I appreciate you so much for the help.

    Reply
  2. Melina

    Hello from Illinois <3

    Reply
  3. Gage

    how did he come up with this circuit

    Reply
  4. Jessiah

    I am excited for live!

    Reply
  5. Michael

    Hello from Mississippi

    Reply
  6. Chloe

    hey from ms

    Reply
  7. Brady

    I really liked the protégés part about How Ethernet works

    Reply
  8. Ellie

    hi from louisiana

    Reply
  9. Olivia

    hi from ms

    Reply
  10. Ira

    Happy to be here

    Reply
  11. Patrick

    hello from Texas

    Reply
  12. Mia

    Hi from TX!!

    Reply
  13. Ezra

    Hello from California!!!!

    Reply
  14. Aaliyah

    here from columbus ga

    Reply
  15. Levi

    Happy Wednesday!

    Reply
  16. Hope

    hi y’all so excited to be in class today

    Reply
  17. Victor

    Good evening from Florida!

    Reply
  18. Michelle

    Learning about Ethernet is making me look forward for next weeks live!! Can’t wait to learn more in depth.

    Reply
  19. Brayden

    Hi from Texas! Excited for tonight!

    Reply
  20. Brayden

    How does the Ethernet work? Like is it just internet sent through a cable or is it entirely different??

    Reply
  21. Jayla

    hi from tennessee

    Reply
  22. Lennon

    Im excited for tonight! Thank you for these videos, watching from Kentucky

    Reply
  23. Piper

    Loved it!!!

    Reply
  24. Ashraf

    What actually happens to the data packets during an Ethernet collision, and why was it considered to cripple the network?

    Reply
  25. Samuel

    here from IL

    Reply
  26. Jackson

    Jack from Caddo

    Reply
  27. John

    Hi from sc

    Reply
  28. Makynzi

    I wonder if it could be possible to use the vampire tip cable to connect an old computer with a new one. Would take a lot of engineering, though.

    Reply
  29. Jack

    Hi from Colorado

    Reply
  30. Jonah

    Hello from FL

    Reply
  31. Aspen-sky

    Hello science live! I’ve heard the word “Ethernet” before but never knew what it was. Guess I’ll learn about it!

    Reply
  32. Broghan

    What would happen if you got one of those cables mixed up

    Reply
  33. Annabella

    hi from Texas

    Reply
  34. Emily

    How do you stop collison packets ?

    Reply
  35. Kylie

    Hello from NY!! Have a good day/night!

    Reply
  36. Alyssa

    i always love watching these videos its really amazing

    Reply
  37. Ira

    This episode was great!

    Reply
  38. Breaunna

    Hey from Virginia

    Reply
  39. Mia

    Hi from the aloha state🌴🏝️.

    Reply
  40. Colin

    hi from kansas

    Reply
  41. Jameson

    hi. I’m Jameson from Texas

    Reply
  42. Tessa

    Hi from NC, very cool to learn about Ethernet tonight.

    Reply
  43. Anastasia

    Whoo! Dr. Tobias is my favorite!!

    Reply
  44. Demitri

    Ethernet is a great invention and very underrated nowadays.

    Reply
  45. Kaiden

    Hi everyone. I’m looking forward to today’s class!

    Reply
  46. Robert

    Comment Hello from Charleston, SC!

    Reply
  47. Didrika

    The Proteges are the best part of my day!! They always bring a smile to my face:)

    Reply
  48. Evanghelie

    How many kinds of Ethernet cable is there?

    Reply
  49. Cooper

    heyy from hawaii

    Reply
  50. Amara

    Hi from Memphis! Great live!

    Reply
  51. Abigail

    Hi from MS

    Reply
  52. Brenden

    What is the maximum speed that ethernet supports?

    Reply
  53. Ira

    So cool!

    Reply
  54. Coy

    Hi from Kentucky!

    Reply
  55. Joseph

    I’m so ready for this live

    Reply
  56. Lillian

    How much did it cost to make the ethernet?

    Reply
  57. Draven

    Hi from TX

    Reply
  58. Shyla

    Hi from UAS

    Reply
  59. Hayes

    Hi everyone. My little sister and I are here from Georgia!

    Reply
  60. Meghan

    This is so coooooooll!!! I love Acellus Acadamy! And hi from tennesssee (aka, my dad’s house)

    Reply
  61. Stella

    Hi from NJ

    Reply
  62. Lillianna

    Gonna be entertaining as always!

    Reply
  63. Noah

    Hello from Texas

    Reply
  64. Oscar

    Hey, from Virginia

    Reply
  65. Adeline

    So excited for science live!

    Reply
  66. Aubree

    Hello from Nevada

    Reply
  67. Ellie

    from louisiana!!

    Reply
  68. Destiny

    hope everyone is having an amazing day

    Reply
  69. Dakota

    Older tech is so cool!

    Reply
  70. Emilio

    I never really thought of it like computers talking to one another!

    Reply
  71. Ashton

    Hi from NC

    Reply
  72. Lukas

    I like science live. Lukas from Louisiana.

    Reply
  73. Makenzie

    Hello from Alabama

    Reply
  74. Ly`hari

    hello from texas

    Reply
  75. Blaze

    Hello from Kansas! Hope you guys have a good day

    Reply
  76. Nichole

    howdy from Texas!

    Reply
    • Sciencelive

      Howdy Nichole! 🤠

      Reply
  77. Bowan

    hello from Mississippi

    Reply
  78. Brodie

    Hello Mr.Billings

    Reply
  79. Rylee

    hi from ID

    Reply
  80. Madelin

    Which is better ethernet or wifi

    Reply
  81. Bryson

    hi from michigan

    Reply
  82. Giselle

    Hello, wonder what the video is about this time!

    Reply
  83. Jayden

    Hi from Ky!

    Reply
  84. Kenady

    I am enjoying this episode of live science!

    Reply
  85. Isaiah

    i really liked this live.

    Reply
  86. Surrey

    This was a great science live today it was very interesting

    Reply
  87. Jayden

    Hello from Ohio

    Reply
  88. Jonathan

    Were there any companies that competed against Zerox for the ethernet?

    Reply
  89. Jerry

    I like science live

    Reply
  90. Shiley

    How does ethernet affect everything else?

    Reply
  91. Jensen

    Hi, I’m so excited for Science Live!

    Reply
  92. Abigail

    Love science live and learning new stuff from it!

    Reply
    • Sciencelive

      Hi Abigail! We love science too! 🔬

      Reply
  93. Arley

    The evolving of the ethernet is interesting and impressive!

    Reply
  94. Eliza

    HELLO FROM Georgia

    Reply
  95. Lucas

    Hi from tn

    Reply
  96. Aurora

    Ethernet sounds very futuristic

    Reply
  97. Austin

    hi from GA

    Reply
  98. Brezlynn

    Hi from Texas!

    Reply
  99. Wyatt

    hello from virginia

    Reply
  100. Elliot

    Science is fun!

    Reply
  101. Kendall

    hola from Florida!

    Reply
  102. Cassandra

    This live was amazing!

    Reply
  103. Joel

    Hi from Indiana

    Reply
  104. Josias

    Hi from Alaska!

    Reply
  105. Kyleigh

    Hi from Illinois

    Reply
  106. Eliam

    Hi from New Jersey! excited for today’s live video!

    Reply
  107. Zander

    Hello from wisconsin!

    Reply
  108. Camila

    Hello from Texas! Excited about science live

    Reply
  109. Ariel

    Hi from Georgia

    Reply
  110. Ivy

    hi from Cheny WA

    Reply
  111. Isha

    i love science live

    Reply
  112. Zoe

    Hi from Texas! Ready for Sciencelive!

    Reply
  113. Connor

    Good evening science live

    Reply
  114. Sayed

    Hello from Louisiana

    Reply
  115. Kaylee

    I’m from Georgia thanks for this video.

    Reply
  116. Hannah

    I love these lives

    Reply
  117. Daniel

    I love science

    Reply
  118. Alexander

    hello from TN

    Reply
  119. Jakub

    Jakub from NJ cant wait to watch the video!!!

    Reply
  120. Jack

    Hello from Illinois

    Reply
  121. Anthony

    Hi from ct

    Reply
  122. Isha

    Hello from Bangladesh

    Reply
  123. Ethan

    checking in from u.s.

    Reply
  124. Jack

    i really love science live

    Reply
  125. Emory

    Glad i could make it!

    Reply
  126. Olivia

    hi from CA

    Reply
  127. Marlie

    Great live this week!

    Reply
  128. Carter

    Hello from East Texas!

    Reply
  129. Sophia

    Love science live!

    Reply
  130. Addison

    Hello from Mississippi!

    Reply
  131. Linkin

    whats up from kansas

    Reply
  132. Jose

    hi from TX

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  133. Addison

    hiii love science live

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  134. Lillian

    hello from illinois

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  135. Janiya

    I love science live!

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  136. Jacob

    hello from texas

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  137. Elyon

    hello from Georgia

    Reply
  138. Ashton

    hi from nc!

    Reply

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