1

Technology / How does an electric guitar work?

« on: 30/11/2007 02:20:27 »

Every person just plays the electric guitar. Do they ever think how the sound is transfered from vibrations to elelctrical currents and out the amp as vibrations again? I was wondering how myself while having my guitar lesson today, so ya, i was wondering if you guys could help me on this one.

2

Chemistry / Any Ideas?

« on: 30/11/2007 02:14:13 »

can someone help me think of a nice somewhat complicated for an 9th grade level science fair?

3

Chemistry / Polyatomic Ions with noble gases

« on: 30/11/2007 02:11:22 »

how Polyatomic Ions with noble gases can be made? i know one is something like Arsenic and Xenon, which i have no clue how its used but ya.

4

Famous Scientists, Doctors and Inventors / Stock Market.

« on: 07/11/2007 01:30:26 »

What kind of a genius would think of such an elaborated system?

5

Geek Speak / TV/computer monitors

« on: 06/11/2007 05:52:32 »

What are they made of?

i.e when you touch a computer screen that is turned off, what [elements perhaps] do you feel?

6

Chemistry / Aluminum Zirconium Tetrachlorohydrex

« on: 30/10/2007 23:51:01 »

Could anyone explain to me weather this would make sense or not?:




I. Title: Aluminum Zirconium Tetrachlorohydrex in the human bloodstream.

II. Problem: Is Axe© stick deodorant bad for the human body?

III. Hypothesis:  I believe that the aluminum zirconium tetrachlohydrex alloy may melt into the skin, and may be a source to some physical health disorders. Due to the warnings on a common Axe© stick of deodorant, you should not use on broken skin, is bad for you if you have kidney diseases, and a rash may occur. Those cautions may be directly connected from one to another. If applied on skin to often, and no sweat to wash away, it may cause broken skin. If you apply the deodorizer it will enter the bloodstream, and therefore effect your health.

7

Technology / 3d Glasses

« on: 19/10/2007 05:50:29 »

How do 3-D glasses with the siple red a blue make movies seem 3-D?

8

Physiology & Medicine / Cracking Joints

« on: 19/10/2007 04:45:23 »

Whenever i twist my ankle or wrist they always make this annoying craking sound, but i feel no pain, someone told me that they could be symptoms of Arthritis but when i read on the web, most sites say if i feel no pain its just fine. Can someone please verify this for me?

Thank you

9

Chemistry / How do sceintests know about Undiscovered elements.

« on: 10/10/2007 01:27:10 »

There is a whole table of undiscovered elements, how do scientests know that those exsist?

And a second question: how do scientests create new atoms?

10

Chemistry / Anti-Sublimation?

« on: 09/10/2007 23:16:31 »

There is defiantly the change from solid to gas, the process of sublimation, but is it possible, to have the gas state of mater, turn straight to solid, skipping the liquid stage? If sublimation occurs by surface area gaining enough energy to make it vaporize, could the vapor of the object loose so much energy that it anti-sublimates?

11

Chemistry / How do neutrons affect the radioactivity of differet isotopes?

« on: 09/10/2007 21:11:11 »

     Uranium-238. It is a very stable element, with an amazing long half-life of 4.7billion years, but still radioactive. But, on the other hand, Uranium-235, an Uranium isotope, is highly reactive and with a few less nuetrons, has a half life of 12.5 million years, which i verry small in comparison that Uranium-238 has 4.7billion years. Why do so little chargless nuetrons matter so much in the radioactivity, and life of an element?

12

Chemistry / Favorite Elements

« on: 09/10/2007 21:03:14 »

What are your favorite elements?

For me, I have gotta say, Uranium and Cesium, for simple obvious reasons.

13

General Science / Are catchy titles important to getting reactions?

« on: 09/10/2007 03:58:52 »

I belive that the science is what matters not the Catchy titles, but i'd like to know your opinions.

14

Chemistry / Signs.

« on: 09/10/2007 01:48:50 »

What do each of these mean? (Yes im only a young teenager!)

Σ:
Ψ:
Φ:
Ω: Omega right?
Δ: Delta, change over...
α: Gama?
β:
γ:
δ:
ε:
ζ:
η:
θ:
λ:
μ:
ξ:
π: this looked like pi when i posted it...
ρ:
ς:
σ:
φ:
ψ:
ω:
∞: Infinity
∂:
≈: About

15

Famous Scientists, Doctors and Inventors / Kleenex?

« on: 05/10/2007 02:08:38 »

Who, where, how, why?

16

Chemistry / How do hydrogen ions contribute to pH?

« on: 05/10/2007 01:55:33 »

How exactly do the ionized hydrogen atoms affect acidity?

17

Chemistry / Which radioactive elements have the longest and shortest half lives?

« on: 03/10/2007 03:53:22 »

What elements have the longest, or the shortest half life?

18

Guest Book / Another Idea: nuclear science section

« on: 01/10/2007 05:58:05 »

I think that should go as well, my friend gave me the idea.  []

19

Chemistry / How safe and effective is Tricolsan?

« on: 29/09/2007 20:56:10 »

I heard that in all antibacterial soap, there is Tricolsan, and it can be harmful for the body, and doesn't kill all bacteria unless its on your skin for 2.5 min, why is this true, and how is it harmful for the human body?

_{Mod edit - formatted the subject as a question.  Please try to do this to help keep the forum tidy and easy to navigate - thanks!}

20

General Science / How many decibels does it take to damage human hearing?

« on: 29/09/2007 18:56:43 »

My friend who has very sensitive ears comes over to my house, while im playing my sax, or e-guitar, and he always blames me for being very loud, and it may be over 60 deciples which is hurtfull to his ears or something like that, could hours of saxaphone in a band be devistating to my ears?