how do water chimes work

[gaz.d]

http://www.creativekidsathome.com/activities/activity_6.html

remember the kiddies activity of tapping glasses each with different levels of water in.

I need to know the physics of it and how it actually works and produces the different sounds, any links would be helpful cause im stuck with it now

im guessing its to do with the different volumes of water in the glass, but i need to write it posh

silly question i know, but your help will be gratefully recieved

 

[Stu DemonD]

Speak to Paul, he will give you a 3000 word essay on it

 

[gaz.d]

i posted this hoping he was on , i only need basic principles off it, but using big words

 

[Emm]

i question Gazybabes......WHY???? lol!

 

[gaz.d]

uni work, i need to create a communication device

 

[Stu DemonD]

uni work, i need to create a communication device

How about a mobile telephone?

Or guys with flags......

 

[Emm]

ahhhhh!!

 

[gaz.d]

How about a mobile telephone?

Or guys with flags......

it has to be simple form and something that hasnt been done or isnt mainstream

levels 1 and 2 of the OSI model, i would go on about it but cant be bothered lol, i need to concentrate and the actual medium that im gonna use and the ways that it is actually transmitted

**** assignment but i get to do a demonstration at the end, i was gonna use smoke signals but they wouldnt let me

 

[Stu DemonD]

Lol, Gaz and a lighter - now that would be fun...

 

[The Negotiator]

Ok, 3000 words? You'd be lucky!

It's nothing posh AFAIK (not like standing waves of a guitar in which case i would probably muster a few more paragraphs):

When you tap the glass, it vibrates, producing a sound of a certain pitch (i.e. high or low). The pitch of the sound depends on how fast the glass is vibrating (quickly => high pitch, slowly => low pitch). The faster it vibrates; the higher the pitch will be. Adding water to the glass slows the vibration (it acts as a dampener, see notes about harmonic motion not included here but in my physics folder ), lowering the pitch. As you increase the depth of the water you allow more water molecules to remove energy from the system. As energy = hf, lowering energy lowers the frequency (h is simply plancs constant, don't know it off by heart) and vice versa (energy is proportional to the frequency).

You could look at a lot of different possibilities such as using thinner glasses (where adding a small amount of water would increase the dept dramatically) or a wider cross sectioned glass to find which would have the bigger affect on the pitch.

HTH? If not let me know

 

[Neofolis]

If you want a simple communication device, try two yogurt pots and a piece of string.

 

[gaz.d]

If you want a simple communication device, try two yogurt pots and a piece of string.

we not allowed to do that

cheers paul