So, Our Physics Teacher Has The Strange Idea Of Motivating His Students By Letting Each Of Us Present

So, our physics teacher has the strange idea of motivating his students by letting each of us present a physical phenomenal we find interesting to our classmates in a 5-minutes-presentation. And now I need something that is interesting for everyone - even people that usually don't care for physics -, but has interesting facts for someone who's interested in it, too (preferably with an easy experiment). You don't happen to have any ideas, do you?

First of all, your professor is awesome for taking the time to do this. Of the top of my mind, the best one I have is Chladni figures.

Basically take a flat metal plate, fix it at the center and spray some fine sand particles on it.

Using a violin bow, gently excite any edge of the plate to magically witness these beautiful normal mode patterns ( known as Chladni patterns/figures ) forming on the plate.

Also notice that by pinching the plate at different points, the pattern obtained changes.

There is a whole lot of physics that goes behind such a simple phenomenon and I dare say we understand it completely. There are lots of questions on these figures that we have no answer for!

Hope this helps with your presentation. Have a good one!

Gif source video: Steve Mould

More Posts from Optimisticcloudgarden and Others

optimisticcloudgarden

7 years ago

The more light you allow within you, the brighter the world you live in will be.

Shakti Gawain (via quotemadness)

1K notes View Post

optimisticcloudgarden

7 years ago

Set Fire To The Lithium

905 notes View Post

optimisticcloudgarden

7 years ago

Crying does not indicate that you are weak. Since birth, it has always been a sign that you are alive.

Brontë (via quotemadness)

18K notes View Post

optimisticcloudgarden

5 years ago

“Jack and Jill went up the hill to have a little fun, but stupid Jill forgot the pill and now they have a son.”

—

62 notes View Post

optimisticcloudgarden

8 years ago

There is a Diamond ExoPlanet and it’s worth is $26.9 Nonillion.

If we stacked all that money in $50 notes, this would be the outcome. The earth(on the left at the bottom) is used for size comparison.

$26.900,000,000,000,000,000,000,000,000.000

56 notes View Post

optimisticcloudgarden

7 years ago

2K notes View Post

optimisticcloudgarden

8 years ago

The faster you move, the heavier you get

If you run really fast, you gain weight. Not permanently, or it would make a mockery of diet and exercise plans, but momentarily, and only a tiny amount.

Light speed is the speed limit of the universe. So if something is travelling close to the speed of light, and you give it a push, it can’t go very much faster. But you’ve given it extra energy, and that energy has to go somewhere.

Where it goes is mass. According to relativity, mass and energy are equivalent. So the more energy you put in, the greater the mass becomes. This is negligible at human speeds – Usain Bolt is not noticeably heavier when running than when still – but once you reach an appreciable fraction of the speed of light, your mass starts to increase rapidly.

295 notes View Post

optimisticcloudgarden

7 years ago

Good Wood - More Irregular Angles, This Time On The Outskirts Of The Garden City Of Damavand, Iran. Damavand

Good wood - more irregular angles, this time on the outskirts of the garden city of Damavand, Iran. Damavand Villa by resident architects Shirazian Studio.

2K notes View Post

optimisticcloudgarden

7 years ago

You never get over it. But you get to where it doesn’t bother you so much.

Jeffrey Eugenides (via quotemadness)

14K notes View Post

optimisticcloudgarden

6 years ago

Every saint has a past, every sinner has a future

Oscar Wilde

Tags

quote