1
Chemistry / Creation of gama rays, x rays, microwaves
« on: 02/12/2007 21:10:21 »
cant gama rays be made by gamma decay?
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2
Geek Speak / How many Gigs is a movie?
« on: 02/12/2007 20:59:19 »
can be up to 15 for like LOTR but normal movies are about 7 i suppose, if i recall correctly
3
Chemistry / Any Ideas?
« on: 02/12/2007 20:58:22 »
so pretty much I get paper, and demonstarte how they normaly recycle it and test other enzyms to see if they work to? (better? worse?)
4
General Science / Can we learn to see things the right way up when we're hanging upside down?
« on: 02/12/2007 00:58:17 »Instead the motor system re-tunes itself so that up becomes down and down becomes up, so you know to reverse what your eyes are telling you when you go to do something.
(within minutes).
Chris
wouldn't that mean that when the light comes in its just going straight cause it normaly would flip the image on the retena?
5
Chemistry / Any Ideas?
« on: 02/12/2007 00:45:49 »
i found this in wiki about paper company, is this sorta what you meant?
Amylases, Xylanases, Cellulases and ligninases are the used enzyms
Degrade starch to lower viscosity, aiding sizing and coating paper. Xylanases reduce bleach required for decolorising; cellulases smooth fibers, enhance water drainage, and promote ink removal; lipases reduce pitch and lignin-degrading enzymes remove lignin to soften paper.
Amylases, Xylanases, Cellulases and ligninases are the used enzyms
Degrade starch to lower viscosity, aiding sizing and coating paper. Xylanases reduce bleach required for decolorising; cellulases smooth fibers, enhance water drainage, and promote ink removal; lipases reduce pitch and lignin-degrading enzymes remove lignin to soften paper.
7
That CAN'T be true! / What you've always wanted to know but were afraid to ask
« on: 01/12/2007 22:22:36 »
Chuck norris can belive its not butter,
Chuck Norris is not Politically Correct. He is just Correct. Always.
lol
well anyway heres one
Did you know that An elephant trunk has no bone but 40,000 muscles?
A person will die from total lack of sleep sooner than from starvation.
Ocean waves can travel as fast as a JET Plane.
The cicada, a fly found in Africa, spends 17 years of its life sleeping; and only two weeks is awake during which mates and then dies.
Chuck Norris is not Politically Correct. He is just Correct. Always.
lol
well anyway heres one
Did you know that An elephant trunk has no bone but 40,000 muscles?
A person will die from total lack of sleep sooner than from starvation.
Ocean waves can travel as fast as a JET Plane.
The cicada, a fly found in Africa, spends 17 years of its life sleeping; and only two weeks is awake during which mates and then dies.
8
Chemistry / color and molecules
« on: 01/12/2007 22:18:31 »
well i suppose you could say pigmints, or light itself, it creates color, but in other words:i dont believe anything is ment to serve a purpose, we use it as something that we found out works for it. i.e. chicken wasn't meant to eat, some caveman decided to eat it, and now we eat it. or lets say dogs, they could have been meant to eat, but now we use them as pets.. understand what i mean?
9
Chemistry / Any Ideas?
« on: 01/12/2007 06:51:16 »
or perhaps creating a battery based on Hydrogen?
10
Chemistry / Any Ideas?
« on: 01/12/2007 06:47:47 »
Hey you guys, how could i test the efficiency (ratio Power:Energy wasted) of differnt kinds of batteries, I.E. beetween a NiMH a NiCd, and a Li-ion battery?
11
Chemistry / Any Ideas?
« on: 30/11/2007 02:33:14 »
well i was gonna test the efficiency of light bubls by using two equal bateries, two different light bulbs, a solar pannel and an empty battery and light bulb.
i will have a dark box with a solar pannel on top the light bulb atachted to the first battery, and then turn it on for 30 min, charge a secondary battery, which is empty, and time how long the battery lasts by atatching it to another light bulb, repeat procsess for other bulbs.
but i decided this would be to simple and is probably already everywhere on the internet.
and no, it doesn't have to be chemistry, but chemistry is my favorite subject so i'd like to see if i can think of anything chemsitry first.
i will have a dark box with a solar pannel on top the light bulb atachted to the first battery, and then turn it on for 30 min, charge a secondary battery, which is empty, and time how long the battery lasts by atatching it to another light bulb, repeat procsess for other bulbs.
but i decided this would be to simple and is probably already everywhere on the internet.
and no, it doesn't have to be chemistry, but chemistry is my favorite subject so i'd like to see if i can think of anything chemsitry first.
12
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.
13
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?
14
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.
15
General Science / Re: A-Z of AVIONICS
« on: 07/11/2007 01:46:19 »
Fr Francium
Quote
Francium (IPA: /ˈfrænsiəm/), formerly known as eka-caesium and actinium K,[1] is a chemical element that has the symbol Fr and atomic number 87. It has the lowest known electronegativity and is the second rarest naturally occurring element (after Astatine). Francium is a highly radioactive metal that decays into astatine, radium, and radon. As an alkali metal, it has one valence electron.
Marguerite Perey discovered francium in 1939. Francium was the last element discovered in nature, rather than synthesized. [2] Outside the laboratory, francium is extremely rare, with trace amounts found in uranium and thorium ores, where the isotope francium-223 is continually formed and continually decays. Perhaps an ounce exists at any given time throughout the Earth's crust; the other isotopes are entirely synthetic. The largest amount ever collected of any isotope was a cluster of 10,000 atoms (of francium-210) created as an ultracold gas at Stony Brook in 1996.[3]
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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?
17
Chemistry / How reactive is Francium?
« on: 07/11/2007 01:23:40 »Quote
We study francium by cooling and trapping it in a magneto-optical trap, and then subjecting it to a variety of laser pulses. We trap francium by neutralizing on a piece of heated yttrium and injecting it into a magneto-optical trap (MOT). The MOT is formed at the intersection of six laser beams shining through a glass cell vacuum chamber and an anti-Hemlholtz magnetic field, as depicted in the above apparatus figure.--http://saaubi.people.wm.edu/ResearchGroup/Research/Francium_Research/Francium_Introduction.html
We use the MOT because it allows us to trap the francium in vacuum with no substrate in a volume less than 1 mm wide. The MOT also cools the trapped francium to below 100 µK, reducing the Doppler shift and broadening of spectroscopic lines to negligible levels.
In 1995, the Francium Spectroscopy Group trapped 3,000 francium atoms in a MOT for the first time. In 2002, after redesigning and rebuilding the apparatus, the group succeeded in trapping francium with peak MOT populations of over 200,000 atoms, and an average MOT population of 50,000 atoms.
So what exactly would that mean?
18
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?
i.e when you touch a computer screen that is turned off, what [elements perhaps] do you feel?
19
Chemistry / How reactive is Francium?
« on: 06/11/2007 05:48:32 »
Don't they freeze it in some kind of beam to lengthin its life, to make it studiable?
20
Chemistry / Aluminum Zirconium Tetrachlorohydrex
« on: 06/11/2007 05:47:31 »
With my materials I cant, But i did talk to someone whos doctor said that that actuly may be, if with overuseage, cause skin cancer.