| General > General Technical Chat |
| HELP Required on Science Demos! |
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| Kleinstein:
The usual way to show force is with the extension of a spring. The simplest (at least at the beginner level - no longer for the experts) force is usualy gravity. So use something like equalt weight parts that sum up. Learning often works well with emotion and a technical strong emotion is something failing. A horizontally span string loaded in the center up to failure could be interresting. It fails relatively early because of the addition of forces as a vector. This can be shown with 3 springs in 3 directions. |
| CJay:
Cool example of non contact force is the magnetic levitation toys, the floating globe things, you can also introduce electricity with an electromagnet and disrupt the levitating toy. To demonstrate the heating effect, you could monitor the electromagnet with your thermal camera, conveniently monitoring the current/voltage |
| Kasper:
Combine a function generator, speaker and oscilloscope. Bonus points if it's a big, unenclosed speaker that is cheap so they can see it move and touch it. Extra options: Add an amp and adjustable filter Replace function generator with music or microphone Add rectifier and LEDs, maybe even use LEDs in the rectifier Use thermal camera and see if you can heat the speaker up The first part was my first lab in college and one of very few labs that I remember from 2 years in college and 3 years in uni. |
| armandine2:
I have some experience of teaching this age range and I would start off with the assumption that "force(s)" are not words that have yet made a place in their vocabulary and definitely not in their present understanding - and except for a minority of pupils who will have an inkling of your lecture the majority will be more confused after your talk than before it. There is something called the "spiral curriculum" which rationalizes this process of teaching different age levels. The idea is that you pitch it (your content) in terms and ways which resonate with the audience. You should not be illogical but admit that the content you give would not satisfy you. ]ed for spag[ |
| EEVblog:
I put this together to see how it would all work: |
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