Transistors
January 21, 2026 • EPISODE 294
What is a transistor and why is it important? In this episode of Science LIVE, Dr. Roger Billings explores how transistors control electric current, replaced bulky vacuum tubes, and made modern electronics possible—from radios to computers and smartphones. The episode also features a tiny bug-like robot developed by MIT and the fascinating story of Henry Ford and how Thomas Edison influenced the development of the automobile.
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 »
What’s the name of the shark?
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this is so interesting
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I never knew that there are essentially “walking sharks” , so cool.
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we are going to have a snow day
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Sharks can breathe and walk on land?
I wonder how they discovered that fact about sharks, like what led to them testing that.
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The information about the sharks was very interesting. Where can I learn more about them?
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why do we have migraines
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I love this
Could scientists use what they found out about epaulette sharks and apply it’s energy saving adaptions into technology?
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How big are the sharks
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What’s the sharks name
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Thats cool!
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ok this is cool
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Sharks ARE COOL!
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How many named shark breeds are there?
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What does the sharks egg look like?
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how do sharks help our ecosystem?
How much money did it take make Acellus.
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oh that’s cool, I love sharks they are so fascinating.
Me too
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Sharks can help us determine the water flow in the ocean.
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THIS MY FIRST TIME! Pretty exciting.
Where can I find more information on these sharks they sound really neat.
What oceans can you find those sharks?
Sharks are so cool!
What are some of the other characteristics of the sharks?
love this live
Very cool to learn about that shark
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Hey everyone. from Virginia. It is calling for 10 to 16 inches of snow this weekend, and I’m so excited!
That sounds like a lot of snow.