Other Sciences

It takes me 5 minutes to calculate: 1682 * 21 How fast can you calculate??? (without a calculator) Albert

If we can live as long as we want (ie, never age), while we learn, will learning stimulate some matter of our brain that we "actually" become smarter and smarter???? If not, is there a "boundary" of how smart we can be??? Human species revolution has a tendancy of becoming "smarter", why is that?? Albert

The European space research and technology center have made a competition for european university students, to propose experiments that could be made at the international space station. The reason that I'm not writing in the astronomy-forum is that the experiments is encouraged to be made in a wide variety of fields. I think its a very interresting topic... does anybody in here have some good ideas?

How quickly can you count to twenty? I found that in 30 seconds I could count to twenty 6 times------so on average it takes me 5 seconds to count to twenty. this is saying numbers aloud (do it quietly so as not to attract unfavorable attention of the other passengers on the omnibus.)

Hi. Trying to learn on the subject, found some good literature and principles of the process but I have this doubt: -Assuming plain water and not extreme vacuum ; the vacuum pump creates 24 inches of mercury, enough heat supplied to the liquid. The vapor starts filling the vacuum above the liquid surface, decreasing the vacuum reading or not? In other words, the vacuum pump must operate constantly and not only to achieve an initial amount? If the vacuum has to suction all the time to maintain said 24"Hg , why is an internal condenser used inside the distillation chamber ? The condensation could be collected at the vacuum pump discharge. Thanks for the l…

My friend and I are greatly interested in incorporating AeroGel into some projects we have. But we are running into some "brick walls". One of our problems is whether it would be a good pressure protection. Meaning that if it were to be used in deep water applications in say the hull of a vessal, would it work to help support it against the pressures of the deep ocean? Anyone with any knowledge please help.

Years ago, there was a general belief that most engines fell way short of burning all of the liquid fuel. The reason given was that the droplets of fuel are too large to allow the entire droplet to completly burn. We heard claims that, if we could fully vaporize the liquid fuel, we could have 70 to 200 MPG cars. Obviously, these were exagerated claims. But, I'm wondering just how much lost energy there typically is in most engines due to larger than optimal droplet size. Is anyone aware of any recent studies on this subject?

this has been troubling me for a while.... if its 0 degree centrigrade,, and the weather forecast says it will be twice as cold tomorrow, then how cold will it be?

Of course there are several designs of ice cream scoop, but I have one that is pretty popular. Naturally, it is extremely rigid and has a deeply concave scoop surface. But get this: it has a hollowed out area inside of it that is supposedly filled with antifreeze. I can't be 100% certain of this, because I no longer have the packaging or label, but word of mouth says that many commercial and/or gourmet ice cream scoops have a hollow filled with antifreeze. Has anyone else heard of this? So my question is why in tarnation would they put antifreeze in it?? A lot of commercial ice cream parlors rinse their scoops in warm or tepid water periodically, so that they will cut…

Someone I know recently came across a diamond earing in a parking lot. How can I tell (without a microscope) if it's real? Are there any chemical tests? What about physical tests (i.e. weight to volume ratio)...

If you have a sheet of glass (more than a few mm thick) and you look at it from the side then it looks like (from the side) the side of the glass is green. for example, there were some glass shelves (quite thick) in this shop i was in. from the side they looked a bit green. not the main thing.. just the side part. like here: and here: why does this 'green glass' effect happen?

Once again, it has been proved that you can write a "scientifical" study about anything you want, no matter how silly it is. "Acquired growth hormone deficiency and hypogonadotropic hypogonadism in a subject with repeated head trauma, or Tintin goes to the neurologist" http://www.cmaj.ca/cgi/content/full/171/12/1433 Guess we got an explanation for why Tintin is... err, the kind of fellow he is. ))

In case you guys missed them, here they are! http://www.guardian.co.uk/life/badscience/

If you're 10 feet away from one radio and 5 feet from another, will turning one on (through a remote control) affect the intensity of the other radio?

I simply don't understand where to start. I've googled "Making radio's", "Homemade radios" and more but I can't find a good site. How do you make a radio? I would appreciate a link or instructions, Thx.

i just want to download the java runtime environment. When i go to http://www.java.com , the j2re 1.4 blah blah is available from download. while if i go to azureus home page they link you to suns page where jre 1.5 is available for download. can anyone tell me whats the difference.

Considering YT2095 has created a few challenges I thought I would make one myself The winner will be the one with the highest score. The scoring formula will be W/VA=S. W= the weight your electromagnet can continuously hold (in grams) V=input voltage A=current your magnet draws Example: Your electromagnet can hold 1000 grams with a 12v power supply drawing 10A. 1000/120=8.33 The only rules are you MUST make the coil yourself. Other than that you can use any core, wire or power supply. Pictures of your setup would be preferable.

Hello. Can someone direct me where to look for a list of the characteristic frequency, vibration or oscillation of the elements? From atomic clocks information I was able to collect figures for only 3: Rubidium = 6.834,682,612 GHz Cesium = 9.192,631,770 GHz Hydrogen = 1.420,...,... GHz Am looking for the rest, or whatever is known. Thanks, Miguel

Been reading a lot on ELE (Extinction Level Events) and such, and I came across http://www.armageddononline.org and http://www.xs4all.nl/~mke/ Some of the scenarios seem plausbile, a lot's based on science... Do some of those theories hold water? (not the nostradamus stuff...) The Nuclear weapons and Asteroid articles are somewhat scary... Thoughts? Anyone got any more info / places to go things to do?

Why do radio companies spend so much money on antennas for there products, when they can simply use the protective layer around the radio instead? Or, (car radios) to get the best quality, use the exoskeleton of the car as an antenna. I'm positive this will work because I've done similar experiments with a television (that had no antenna)(same basic concept). I found that I can use anything as an antenna (or almost anything). I even used my finger as an entenna and it gave just as clear of a picture and sound as the classic metal rod.

I wasn't sure which catagory this should go under, so I just put it here. I was playing the violin and these question just popped into my head: 1.) What does the Pythagorean tetraktys (I think that's what it's called, something like that) have to do with music. What does 1+2+3+4 have to do with music? 2.) I know that on treble cleft, the note A is at 440Hz (or is it MHz?), but what are the other notes at? 3.) Pitch is cuase by the waves frequency, but what is loudness caused by? 4.) How does where I put my fingers on the strings effect how high or low the pitch is?

Up to this moment, I started to learn some concepts in work-theorem. I am not sure what can this theorem bring us, can anyone tell me the uses of this theorem apart?

It seems like hot water has these little white dots in them but cold water doesn't? What is that? Tiny bubbles? Squid sperm? Bacteria colonies?

In such nano-size transistor as in MOSFETs, how probable is the dielectric going to break down at normal operating electric field or stressing voltage? There are many factors that will aid dielectric breakdown in the metal oxide layer, example localized high temperature, dieletric crystal defects, dielectric strength, applied gate voltage, size of the transistor(thereby size of the oxide layer), etc. But my question is that since many factors cause DB, how does manufacturers of MOSFETs ensure that lower percentage of faultly transistors is produced in the market? The moment DB occurs in any transistor in a processor chip for example, and mind you a Pentium 4 pro…

so.. do you guys have any theories?