General > General Technical Chat
HELP Required on Science Demos!
Circlotron:
--- Quote from: EEVblog on September 29, 2021, 05:07:07 am ---and a demo of how tipping a crystal oscillator over applies gravitational force to the crystal and changes the frequency.
--- End quote ---
That's a fascinating demo, but probably only to an audience that already knows what a crystal oscillator is / does / is used for. For those that aren't familiar with one I think it would be lost on them.
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Gyroscopic forces are pretty cool. Get a bicycle wheel and spin it up and have some sort of extended axle with handles and show how it resists being tilted. Discuss how this helps keep a bicycle upright, and if for example the bicycle is leant to the right the revolving front wheel also turns to the right so you can steer no-hands.
mathsquid:
There’s a cool and easy demo you can where you drop two stacked balls. If the lower ball is larger than the upper one, it will i part more energy to it. It works well with a basketball and a tennis or racquetball ball. You could do it with two tennis balls and then with a basketball and tennis ball and show the difference.
Here’s a video. (Skip to about 1:10) https://youtu.be/yhTz_6NFmV0
EEVblog:
--- Quote from: Circlotron on October 08, 2021, 05:12:17 am ---
--- Quote from: EEVblog on September 29, 2021, 05:07:07 am ---and a demo of how tipping a crystal oscillator over applies gravitational force to the crystal and changes the frequency.
--- End quote ---
That's a fascinating demo, but probably only to an audience that already knows what a crystal oscillator is / does / is used for. For those that aren't familiar with one I think it would be lost on them.
--- End quote ---
My live demo turned out quite well, and it seems that the crystal oscillator one was the most fascinating to them and drew the most questions. I think I blew some minds with it ;D
Here is how that part went down. There were more question but I cut them down.
Circlotron:
--- Quote from: EEVblog on October 08, 2021, 11:53:29 pm ---
--- Quote from: Circlotron on October 08, 2021, 05:12:17 am ---
--- Quote from: EEVblog on September 29, 2021, 05:07:07 am ---and a demo of how tipping a crystal oscillator over applies gravitational force to the crystal and changes the frequency.
--- End quote ---
That's a fascinating demo, but probably only to an audience that already knows what a crystal oscillator is / does / is used for. For those that aren't familiar with one I think it would be lost on them.
--- End quote ---
My live demo turned out quite well, and it seems that the crystal oscillator one was the most fascinating to them and drew the most questions. I think I blew some minds with it ;D
Here is how that part went down. There were more question but I cut them down.
--- End quote ---
If you could show how time goes slower in a gravity well, that would be cool.
PlainName:
Excellent :-+
--- Quote ---There were more question but I cut them down
--- End quote ---
Shame, but one way to beat the population explosion, I guess.
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