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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2,990 Comments

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    i never new that about twisted wieres

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    Hi from tennessee!!! cant wait to learn

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      I use ethernet in my own home

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    Hi from New York!

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  20. Remington

    this was awesome I learned about ethernet

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    HI FROM GEORGIA

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  22. Scarlet

    HeLLOOO from newyorkk!

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  23. Zach

    hi from Utah I’m Zach I love geography!!

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      Hi from VA!

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      Hello Zach! Wonderful to hear from you!

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        Hey Science!!!!

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  24. Judah

    Hello from VA

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  25. Samantha

    My dad said he used the cables to play games with his friends.

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    Hi from Brazil!!!

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    Hello from Georgia!

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    hello from los angeles

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    4/8/2026 Good evening! Here for SL.

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    Hello from Oklahoma!

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    Thank you, Dr. Billings

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  33. Jade

    no idea what ethernet was before this but science is pretty cool so i enjoyed it

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    I enjoyed this video today it was really interesting.

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    I watched the the lanch

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    Hi everyone! Happy Wednesday!!

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      Happy Wednesday to you!!

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    This is my first week with Acellus, and i love it already!

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      Welcome Susan

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      Hello Susan, we’re overjoyed to see you here! Thanks for tuning in 🔬

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    hello Morgan here👍

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    hello from SC!

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  55. Sophia

    ‘Your biggest invention is hiding underneath your greatest problem’ – mind blown

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    • Sciencelive

      We’re so glad you were inspired by this week’s episode Sophia! 🔬

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    Ready to learn!

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    Greetings from USA.

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    Hi from Virginia! 🙂

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    Hello everyone

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    hello from NC

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    hi from texas!

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  74. Trenton

    Really enjoyed the proteges and them explaining the ethernet packet. And Love that saying Mr billings said… always go for the gold! I really enjoyed tonight’s live and learned so much

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    hello from Va

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    Watching from Alabama.

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    Hello from Montana! Happy Wednesday!

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      Happy Wednesday Deklyn!

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    hello from Virginia

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  80. Elijah

    that was awesome

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    Hello from Tennessee!

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    hellooo from TN!!

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  83. Jaidon

    I enjoy these all the time!

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    Hello from Missouri! I’m excited for today’s episode

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    from Decatur , iL

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    Coming in from MD

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    Hello from Louisiana.

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    watching here from missouri

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    hello from Texas

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  91. Nathaniel

    I use this everyday to do work!

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    Hello from Texas!

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  93. Bentley

    I didn’t even know that Ethernet existed

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    Hello from Nebraska

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    Can’t wait for next weeks video!!

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    This was so cool

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    Comme Very interesting video this week!

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    So glad I could sign in to watch the science live today!

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    Hi from GA! So excited!

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    I can’t wait to learn more from this episode! Hi from TX!

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    Hello Everybody!

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    Hello from Alabama

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    Hi from New Jersey!! So excited to learn about ethernet.

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    Hello from Illinois.

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    im weston so happy

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    How many inventions did Roger Billings make?

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    Who were in the Artemis 2 rocket in space?

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    Hello my name is Francoise, from tx

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  131. Jantzen

    Eternet is interesting

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    Hi! From North Carolina.

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    hi from Tennessee

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  136. James

    Ethernet is truly a lifesaver, most of my devices use it and its a lot better than just normal wireless connections

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    Can’t wait for tonight’s lecture!

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    this was awesome cant wait til next week

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    hi from TX, i loved my first episode

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  142. Mia

    Learning about ethernet is so interesting!

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  143. Tobias

    Its crazy how ethernet is now! Thank you Rodger!

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  144. Zoe

    Hiiiii I’m so excited to learn about ethernet!! I can’t wait to see how much i know and don’t know about it can’t wait to learn!!!!

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    Hello from PA!

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    luke here watching from Texas!

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    Hello from Illinois! Cant wait to learn about Ethernet.

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    My dad used to have those wires.

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