Works Definition and 447 Threads

o:) hi, this is me again.i was wondering if you could teach me how to do these 2 questions (?) means to the power of 1)a)find the remainder when 7(100) (I.E 7 TO THE POWER OF 100) is divided to the power of 25( i know that you are supposed to use mod10 or mod25 or something, but...

you have a balance with 1kg weight in each 1 meter long arm when its horizontal each 10 N force * 1 m long will balance so the balance won't move but when you lean the balance 45º the vertical force will be cos 45 * 10 N in each arm so the balance should stay in that position since the...

I was wondering if anyone is able to tell me how a photocell works and why results for voltage versus current change the way they do. In particular i am looking for why the current increases rapidly at the start as voltages slightly increase, and then a flattening out occurs, i.e. the current...

This from cnn today: http://www.cnn.com/2005/WORLD/meast/07/25/military.release/index.html

could anyone please tell me what the caster effect is?or some links that give a good explanation?

"Testability" thread is great (keeping comment/discussion out works, too) I just noticed this neat thread Wolram started where if you have a cosmology model you can list its predictions, to be archived away to consult later and see if they agree with observation. quite understandably Wolram...

Man Hangs His Own Works In Museums March 25, 2005 (New York) — How do you get your artwork displayed in some of New York's most prestigious museums? Hang it yourself. The New York Times reports a British prankster has hung his own paintings in four museums over the last couple of weeks...

I believe one part of google's ranking system includes how many people link to a certain page, and with what key words right?

Hey, can anyone explain to me how this works in more detail? http://www.physics.brown.edu/physics/demopages/Demo/optics/demo/6a2035.htm Thanks.

Is anybody here familiar with his works (The wretched of the earth, A Dying colonialism, Black skin, white masks).. I am just beginning to read some of them.

hi does anyone knows how a power screw works, illustrations would be helpful.. thanks ss

I have uninstalled and reinstalled my norton anti viruse program and it refuses to work. the last time its not even showing up in my add/remove programs. I have some serious computer problems an no way to fix it

hi all, does anybody how a torque wrench works? any illustrations with pictures would be appreaciated.. thanks regards ss

My book gives a proof that "The Strong Principle of Induction follows from the Weak Principle of Induction." I don't understand one step in the proof or how to use it for specific cases (when he asks for a proof by strong induction on something). (He includes 0 as a natural number (the least...

New mini-disc ~ blue laser drive ~ Stores =<1gig Hello again. My name is Kev.I'm 16. I've had a few thoughts about some things. Paticular, a mini CD disc that can hold ALOT (gigs I believe?) of information , and is smaller than a CD! The driver uses a blue laser instead of the regular low...

Hey, folks. A pretty light read on how quantum entanglement works, starting from first principles without using math but with lots of pictures. Quite good! http://www.joot.com/dave/writings/articles/entanglement/ Ciao! T

What makes us so confident that a line of argument works at all? Why do you trust statements so much?

You know how the fill tool in Paint works. If you have a really large computer screen (a billion pixels, say) and you fill each pixel in the screen randomly either black or white (equal probability either one), what is the average number of times you would have to use the fill command for...

“Holographic” projector? Any idea how it works? I saw this a couple of years ago. It’s a projector that’s able to display 2D images or simulated 3D video into the air. Here’s the manufacturer’s site: http://www.io2technology.com/ The site has a few really neat videos. Any idea how this is done?

Dear friends, Here's a problem I can't solve. The disk on the picture falls under influence of gravity. The horizontal table creates no friction and the string that binds mass m and the disk is rolled up around the disk. The center of mass of the disk falls vertically. My question is...

Explain how a polar solvent works in the separation of polar dyes? How might chromatography be useful in forensic science? i only thing i can think of is figuring out what pen the criminal used... i really need help on this... :rolleyes:

so P(A|B) = P(A intersect B)/ P(B). so, P(A intersect B) is the same as P(A) * P(B) right? so doesn't the P(B) always cancel out, and the answer will always be P(A)? That doesn't makes sense at all... :confused: for example: A family has 2 children, and all possibilites are equally...

Well, I know this Q might look cheesy or silly...but: What is the major equation which decides if X disc with Y raduis with Z angular acceleration will carry M mass and "fly" with it...I am just concern about vertical movements...not the horizantal...Basically its about a hgelicopter moving in...

Hey everyone I'm doing some investigation into how sound proofing actually works, and I'm more or less stuck. I've found two terms(http://www.soundproofing101.com) which are used to decribe what happens when you sound proof. they are: noise reduction and noise absorbtion "Noise reduction...

How Transistors Works? tks!

Ok I am understanding of how mass turns into light, but how does light turn into mass?

ill explain how it works: two cilinders are counter rotative now ill explain what it does one of them represented by a cigarete or similar take the cigarete by the center with the filter aiming at 9 oclock, spin it holding it by the center till the filter points at 3 oclock (going...

Here , at last is a Theory of Everything that really works . http://www.geocities.com/natureoflight/pgindex If you have any comments or enquiries you can contact the author directly at natureoflight@yahoo.com

How does dynamical mass generation works ? In QFT-textbooks, the process of dynamical mass-generation is often used. For example one gets an effective quarkmass as a solution of the Schwinger Dysonequation. This mass is dependent on the quarks momentum.The effective quarkmass as a function of...

Anyone clever enough to explain how the hydrogen bomb works

It has brought to my attention that PF members are willing to discuss the author of Shakespeare's works. This issue has a long and varied history with many a claims as there are skeptics and believers. I myself have held the view that Sir Francis Bacon as the only real candiate for the...

http://www.theglobeandmail.com/servlet/ArticleNews/TPStory/LAC/20040410/PLANE10/TPNational/Canada http://spaceflightnow.com/news/n0211/22parachute/ The technology to apply this to commercial aircraft already exists though the Apollo program. Aviation will never be the same. Edit...

I would like to know what sigma is and what it does. What is sigma? What does it stand for? How does it work? Do you have any examples of how it works? any help would be appreciated (im not sure if this should be in the calc section or not)

I met such such command for the 89 or the TI series... ref=gaussian elemination... rref=refined version of Gaussian... I wonder who this thing works... Because for the basic circuit problems with like 7 currents... This rref is VERY nifty. If you set up the equations wrong, the answer...

I understand the whole part about electrons exchanging virtual photons to cause the "repelling" phenomenon but I don't understand at all how attraction works, I know its a totally different analogy from the "two guys standing on slippery ice and tossing a basketball back and forth to each other"...

I want to know what mechanism does it make hair dye product works on hair? Does it work only by coating on the hair surface or any special alteration of the bonding in hair? and beside I want to ask there are products on the market such as "hot rod" which by means of electricity turn into...

Please fill me in with what vicodin is and how it works. Thanks

I know this is a touchy subject these days.. but: What are the specific rules for the distribution of the audio files and pdf encoded notes from the lectures of Feyman, Segal, Hawkings...etc. I came across a huge collection of these on the net (in the thousands) and was just wondering if I...

hey guys, can you find any links on the web that discusses how a analog radio tuner works... i'm talking about in the level of an electronics and communications engineer...an in-depth study and discussiion would be highly appreciated... is this related to an RL circuit?

General Relativity has been the main theme running through the discussions I enjoyed in the previous PF version. Cosmology issues, removal of the big bang singularity (loop quantum cosmology LQC), dark energy (cosmological constant), the limits of the observable universe, the CMB, redshift...

Has anyone read any of his books? The subject matter is quite far-fetched, but it does make you wonder about things, and he makes quite a few good points in among the idle speculation. He's not really loved by the archeology community, but I think his books are at least worth a read. They...

Ok I'm new here and I'm trying to get on my feet so I hope that this is the right forum to post this in. Anyway, Einstein supposedly proved that there was no force of gravity, that it could be subsituted with accelaration, and that gravity is made by bent space time. I have quite a few...

Ok, for some reason, I cannot understand exactly how centrifugal force works or the concept behind it. For example, when an Army helicopter is flying through the air and turns, why don't the soldiers slide towards the door or even fall out? Because I know that military choppers do not contain...

How a Motor or Generetor works ?

Could anybody explain the theory behind time dilation and how exactly time dilation works?

Where can I find the works of Karl Gauss, online or in a book.

could anyone explain to me how a tesseract works as far as travel is concerned? are there any articles, theories, or better yet, any formulas associated with this concept? i'd love to hear them.