Other Sciences

I am posting on several religious threads and have a question on Radiometric dating. I do not know much about it, but from what I have heard it is based on how many radioactive particles are left in a molecule or something like that. What I am wondering is there anyway that those radioactive particles are leaving those molecules for different reasons then age such as exposure to sunlight or water or tempatures or even pressure being applied to that particular molecule. This may sound stupid and I may be completely wrong about how it works, but I just was wondering. If you choose to post anything I would like you to be a credible source and just not a kid in the tenth…

Hey guys, Is it possible to HORIZONTALLY FLIP my own reflection without the use of two mirrors side by side? Is this the only way or is there an easier way? Thanks Mason Roberts

I guess this is more of a philosophical thought than it is a scientific thought, but its something I was discussing with an inferior mind earlier today.. Lets say we have a machine that reads all the atoms of a person, sends the information over some sort of medium where a machine on the other side reconstructs the atoms with the "blueprint" that came over the line.. Lets also assume that the machine that sent the data deconstructs the original atoms and stores them for later use (another teleportation or something). Two questions: Is this teleportation? Why or why not.. Is the "teleported" person the same person as the original? Why or why not. I argu…

This is my theroy (sorry if it's not a new idea) on why time travel may be theroreticly imposible: 1. It's the year 2006 2. I move myself 20 years into the past (to 1986). 3. I stand in the feild that was here before my lab was built and look around for a moment. 4. I go back to 2006. Even the verry small amount of change I made in 1986 (apearing in the feild, looking around, disapering) is still change and will slightly alter the circemstances in which I built my time machine and went back into the past in step 2. Therefore step 2 will happen in a slightly difrent way and so alter the way step 3 and 4 happen Therefore step 2 will happen in a slightly difr…

Respected Members, The density (Specific Gravity) is a valuable index of chemical composition of alloys. Although, one can calculate the composition of binary alloys of known metals from their densities (Specific Gravities) in straight forward manner, but for alloys having three or more constituents it leads to a mathematically untenable situation as we have more unknowns than the equations. The densities of such multi-component alloys are always associated to a large number of probable compositions. So, mathematically it is not possible to calculate all such probabilities and then to point out authentically with certainty as to which one particular composition does actu…

Please move this to physics if it is better posted there: I am not sure the best place for it (its also kinda a chem question too) Basically, I've been playing with an idea for scifi reasons but I am interested in conventional applications as well: liquid fuel propelled munitions. Basically, instead of having a shell and the explosive load tied together in a single unit, I've been wondering about using hydrogen/oxygen (or other fuel) in a combustion system not unlike the cylinder of a car to propel a round. The advantage would be smaller munition magazines that held more, and the ability to dial up or down the power of any given shot when over-penetration is…

Member Danny6777 made a post in general discussion asking why Jews were making acheivements in science. The thread was rapidly closed (I believe this was because there were anti-semetic insinuations). Despite this, he said something interesting that prompted me to think about the relationship between the social, political and economic power of various nations or groups and their scientific acheivements. Even though that thread was closed, I thought I'd start a discussion about that here. This is an excellent example of how social political factors play a role in science. Scientific acheivement often coincides with political or economic strength o…

after constantly filling up one of my daughters balloons about once every 2 weeks, I got to thinking about these Helium atoms and where they go. obviously small enough to escape the balloon and probably the bedroon ceiling etc... so they rise up through the air like a ping pong ball under water does. they`re heavier than a vacuum (like that in space) so they would stop there after reaching a pressure equilibrium. so do we have a thin Helium Layer around the Earth?

Okay it may sound like a weird question. But I know that avocados are toxic to most mammals, livestock and house pets included. Luckily they don't seem to have this effect on us. However, I've been eating ALOT lately. I think I'm seriously addicted. If I don't eat them for a while I start feeling kinda shitty. Plus they make me feel so good after I eat one. I eat at least a few a week, between 3-5 I'd say. Now I know they're high in calories, but I'm not worried about that. I'm healthy work out often, and have actually been loosing weight recently. Plus besides that I don't get much fat anywhere else besides nuts, since I eat lean meats and not much junk food…

I discussed the idea of a brain computer interface with my 17 year old sister. At first, she seemed enamoured of the idea and could see many benefits. With further thought, she then became squeamish about the surgery that would be necessary for a true nervous system interface to function, and about the possibilities of a networked device attached to her body being hacked or otherwise having security liabilities. Then she decided that after all, it would be a very bad idea to have this kind of constant, easy access to something like the internet, or even the contents of her own hard drive, such as games and so on. She said that she herself had wasted many long hou…

1. To turn 50g of boiling water to steam requires A. 50 Calories (210 Joules) B. 500 Calories (2100 Joules) C. 540 Calories (2270 Joules) D. None above 2. If you were caught freezing in cold weather with only a candel for heat, you would be warmer in A. an igloo B. a car C. a tent D. a wooden house 3. It is possible to totally convert a given amount of energy into mechanical energy. A. True B. False 4. When a solid is changed to a liquid phase, the solid A. absorb energy B. release energy C. neither 5. When work is done by a system and no heat added to it, the temperature of the system A. Decrease B. Increase…

I swear I have ask this question before somewhere but here goes...again. What is it called when a butterfly in Japan flaps its wings and somewhere a Tsaumi(?) happens? pljames:confused:

Hey guys, I am new to this forum and this question has been plaguing me for YEARS! Literally! I want a person to be able to draw on a playing card (Bicycle stock) and then I want to be able to duplicate that drawing onto another card either simultaneously or after they have signed it it can be transferred. Is thegre any way to do this, I have tried double stick tape and glue on the card, but when I press them onto another card the image is not dark enough and the lines are not clean? Thanks Mason Roberts

I just got a new gym set and I'm going to start on a workout routine. I haven't figured out what I want to do, but I think I'm going to do some weight training. I also want to lose a bit of fat. Is it possible to build muscle and lose fat at the same time? I mean, they say that to build muscle, you have to eat a lot (a lot of protein and a lot of carbs), but to lose weight, you need to consume less than you're burning. Is it possible to do both at the same time?

Hey. I just got an ultraviolet flashlight for realll cheap off ebay, and have been playing around with it recently... i can tell it's a piece, but it works for most things... anyway, ive been wondering, is there anyway to print in ultraviolet ink? like, using a computer printer? i think it'd be so incredibly cool to print out full messages or pictures from the computer that only show up under blacklight/UV... so far, the only idea ive had is to buy one of those refillable ink cartridges... and buying a few ounces of ultraviolet ink (availible in a few places online), and filling the ink cartridge with that ink... of course, the UV ink isnt meant for printer cartri…

Do you know, literally speaking, we are still living in the Stone Age? We still communicate in Morse code. We still use steam piston for most of the power (at least most). Guess how and if you don’t get it then highlight the text below: ===TEXT=== Stone Age: All electronics and IC's are made up of SiO2. That’s stone and sand! Morse code: We still communicate and store our data in off's and on's (0's and 1's) as we did with the Morse code! Steam Engine: Every possible way for generating power uses the steam engine phenomenon. Even in nuclear plants, water is heated and used to rotate large turbines! ===/TEXT=== I came to think of this because of…

Is it possible to draw a little power from a SCART socket on a video recorder, e.g. 1millamp @ approx 10 Volts (DC), to power a pre-amp circuit.

I need a really complex scientific forumla. I'm writing a paper and I'm using math as an analogy for physical determinism. I need something really complex to demonstrate how complexity has no baring on making things more "random" (i.e. the math is just as determined whether it's simple or complicated). So what's the most complicated formula from some field of science you can think of?

Bats have a clever systems built into them to help them see in the dark using sound I'm assuming most of you know roughly how it works http://science.howstuffworks.com/bat2.htm http://en.wikipedia.org/wiki/Bat However seeing in sound instead of light means they see in a completely different way, for example among other things the objects density and surface qualities of the objects like is it rough or furry or smooth or at an angle would have a large effect on how sound is deflected by the object in a very different way to light, also sources of sound are difrent than those of light. loud sound seems travels though walls for example to annoy the nabours when…

Are there more Juniors in jail ? Do prison populations have a greater proportion of men who have the same name as their father, than the general population ? e.g. John Smith Jnr , Joe Bloggs III, i.e. the "mini-me" phenomenon.

If I was to say I had a good understanding of this I would be a liar. Humanity as a whole can't make that claim. It needs a lot of research, observation and scenario modelling before we will begin to make accurate predictions. Assuming people are interested in discussing this I'll start with a few diagrams and then explain some of the state of present knowledge as I see it. ocean: thermal incline, macrolayering, and main circulation system. The circulation diagram is wrong for the nth atlantic, as it should go clockwise.

So Antarctica began to break apart from Gondwana 160 million years ago, glaciers began to form 38 million years ago and it has existed under an icecap for the last 5 million years. If it was to thaw out tomorrow, would we find any biological history or would the damage due to glacieral shifts have pretty much destroyed any evidence? Personally, I find the concept very interesting!!!! http://www.secretsoftheice.org/explore/past.html

http://www.aip.org/pnu/2006/split/793-1.html new study contributes evidence that global warming makes Atlantic hurricanes more deadly anybody want to argue? in related news, a crack opened in the artic ocean ice http://www.esa.int/esaCP/SEM7ZF8LURE_index_0.html (a cheerful Iceland blogger says this trend will make Chinese consumer goods cheaper in Europe because the container ships will go direct by polar route instead of the long way south around India and Africa, or thru Suez canal. great.) ===quote=== Mark Drinkwater of ESA’s Oceans/Ice Unit said: “This situation is unlike anything observed in previous record low ice seasons. It is highly imaginable …

at least twice in the history of Earth, the planet has been completely covered in Ice from the poles to the equator.

Finally I found site that explains thing in a manner that I understand. You might find that primative but it's really put everything in perspective for me. in regards to physics I've even done some Lepton Type Conservations questions and got it right! (very rare) http://particleadventure.org/particleadventure/ Does anyone else know sites like these for all aspects of science, more inportantly biology and chemistry?