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 »
How does the shark not use any energy?
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hello! i’ve always been interested in sea life, i feel like sharks are misunderstood
saving sharks? Wow!
Here from arkansas getting ready for a winter storm hitting here on Friday night all thru the weekend they are calling up to a max of 2 feet of snow or 2 inches of ice
hi
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happy science live.
Wow sharks are very cool and fun, but dangerous, very dangerous
I’m from wierton wv
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I would to watch the sharks! How Cool!!!
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so excited for science live! from georgia
how big are eplec sharks
Do those sharks still exist and if so could we use them to help us?
That shark sounds pretty cool
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love this
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Already wednesday!? im so excited!!! Love science live!
Woah I wonder if other sharks can do that or if its the only one?
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I am here
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Hello I like sharks and like everything about sharks
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How big are sharks?
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I’m graduating this year!
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Hi Emma and jack are here
I find it interesting to learn more about animals, as animals all work in very different ways, so learning more about them are interesting as we can potentially try and mimic some of their behaviors for our technology.
Hi from Flordia where are epolope sharks are in the world
Hello from Missouri! My favorite thing to do on Wednesday is watch science live
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Imagine having 100 to thousands of baby sharks pop up out of nowhere
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Excited for todays live !
i love science
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When will science reach peak evolution?
how did they discover that about the sharks??
amazing live
Heyyyya so excited!!!❤️
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Howdy everyone I’m so glad to be back for another wednesday for a science life
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watching from nd
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Comment How big are these sharks eggs???*
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Can you get biodegraded if you don’t pass biology
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Hi Acellus. I love science and technology!
I love science! Thank you for taking time out of your day to teach.
Really excited about the new history subject!
this was a good live no questions.
wow thats so cool how that works
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Hello from North Carolina! Can’t wait to see what we learn today! Stay safe this weekend guys!
So cool!!! Hey from from Florida
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great video!!!
From texas
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wow, there’s been nearly 300 episodes’ of this. that’s impressive
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science live is amazing !
How many species of sharks are there in the world
Hi from Mississippi! What did you eat for dinner? I had pizza.
Sharks are really cool
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Where do these kind of sharks live and what do they eat?
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i love acellus
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hello from tn!!
How many types of sharks are there in the world that we know of?
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I love sharks
Finally SCIENCE LIVE started.🤩🤩
how big is the shark?
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Yay science live
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I’m excited for the science live
what are elptic sharks
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LOVE SCIENCE LIVE SOO COOL LOVE YOU PAJEt
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hiii i love watching these lives!
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I AM EXCIDED FOR TODAY SCIENCE LIVE.
hi from MD… love the show
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hey I’m here.
I’m so excited for today’s live!
What’s your favorite thing about science
Hello everyone! Happy Wednesday!
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Im excited to watch this!
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