Physics

Hello everybody, i have seen those art today, to be honest it looks so funny haha, But can you see some of them become real ? Enjoy it What a beautiful day! A collection of vehicles that the people of our past predicted being in production one day. France in the Year 2000 (XXI century) – a series of futuristic pictures by Jean-Marc Côté and other artists issued in France in 1899, 1900, 1901 and 1910. An issue of Everyday Science and Mechanics from 1935 promised: 'It has proved possible to photograph books, and throw them on a screen for examination, as illustrated long ago in this magazine. https://www.youtube.com/watch?v=D5uaJDrvZXc

I have vaguely read from some crappy sources that some Gas Turbine Engines have multiple chambers. I tried searching all over the place for this stuff, but the whole freaking internet has nothing on it. If ANYONE has any bit of information on the design/how they work/non-vague diagrams/ ~anything~, please tell. This stuff is really really really really really really really really really really important to me. Help is very very very very very very much appreciated. Thanks thanks a lot lot!!!!!! !!!!!!

I found this applet on airfoils and other types of lift methods: http://www.grc.nasa.gov/WWW/K-12/airplane/foil2.html seems like it is all based on the angle of attack and the curvature of the wing. BUT... I want to make one with the most possible lift and the least possible drag. Which shape is the best? If you can do it on the applet, give me the values or a screenshot so I can reproduce it. Thanxo!!!!

How hot can be pure energy?

all right, so first of all, if you're reading this thread, thank-you, you're really cool, and even better if you can help... ok, so let's say we got ourselves a turbocharger thing, such as the one in the picture here: http://en.wikipedia.org/wiki/Turbocharger I wanna (really bad) know the efficiency of one of these (doesn't have to be the same type as the wikipedia picture one). You can think of it this way: You put 100KW of energy into compressing air. You pipe the air to the inlet part of the turbocharger, so that it works... compressing air into another tank. Given that everything in the system (except the turbo itself) is ideally (100%) efficient, (s…

What is the 0 energy system? 0K ? No mass? But gravity force can pass through it. And electro magnetic wave also passes through it. The system has a volume too.

Sooo a friend of mine had a couple questions in mind, if you guys have any possible answers, please do share, give us your thoughts 1- Can there be energy in 0 Kelvin? 2- Can 0 Kelvin exist in the universe? Answers appreciated in advance

So now im in this debate if a 1 to 1ratio gearhead can give more strength and obviously it can how does this affect science? In cells it is believed that the center gives the most strength when if we understood how strength is being sent we could understand how to make stronger cells using cells of lesser strength on the outside and not in the center then the nucleus could be any cell It would help a lot of fields but I am still in a debate if a 1 to 1 ratio can give strength I had 2 companies agree one said You could accomplish that by using different motor bodies another company said In order to get the same speed …

What are the 10 unanswered questions in current Physics in your opinion ? even some not 10 !

http://discovermagazine.com/columns/top-100-stories-of-2008 enjoy ======================================= to narrow the focus to just physics, here are the top ten physics stories of the year according to Physics News Update http://www.aip.org/pnu/2008/split/879-1.html

I would like to present my idea of a 100% combustion engine pollution collector to replace the catalistic converter. This with my idea of lifting petrol below could guarantee 1000's of yeas of motoring. Also work well on factory chimley etc, eliminating air pollution. What do you think? Might not need the gel belt and scraper, just the u-bend effect? Can also remove the gelbelt and scraper and blow the exhaust fumes through oil within layers of mesh to produce small bubbles. Take a 50cc moped engine, add some fishing wire and a bucket. Drop it down an oil well and winch it up(1.5 miles). At only 30 mph it will take only 2 minutes to reach the surface…

I just started my engineering class and as our first assignment we are supposed to compete with other groups in our class to see who can make the highest tower using only 3 sheets of 8.5" X 11" A4 paper and a meter long strip of scotch tape. The highest on record is 110". So far, I've concluded to get the most out my sheets of paper I would need to cut the paper into 11/16" X 11" strips. This leaves me with 36 of these strips along with 3 1/4" X 11" 'leftover' strips that can be used for anything. It would be appreciated if you leave your input as to how I should go about this and at least attempting to beat the 110" tower. Thanks.

Light has been measured to move at about 186,000 miles a second. In Einstein's special theory of relativity he explained what would happen if that ultimate speed limit was approached. His theory was proven correct when it was determined that there was an absolute differential between the time registered on atomic clocks on Earth versus the atomic clocks on vehicles orbiting our planet. My question is, does anyone have a theory as to why light maxes out at about 186.000 miles a second. I mean why specifically that speed? I am a part of a think tank that is of just recent trying to answer this very question. Our team is working on the idea that this speed limit has somethin…

this may seem like a strange question, but how many photons can occupy the space of 1 cubic centimeter? since a photon is a wave and/or particle, then a wave takes place in space and must therefore occupy some of it, and a particle has volume. so how many photons can you pack into 1 cc? how big/small are they?

If you can think of certain aspects of relativity as rotating space into time then presumably you can draw a circle in time on one axis and space on the other and work out how many seconds are there in a centimeter?

http://www.aip.org/pnu/2006/split/767-3.html?source=rsspnu for comparison the temperature at the center of the sun is calculated to be 15 million kelvin in this experiment a temperature about 100 times hotter than at the center of the sun was briefly produced

This is not a question of religious beliefs but a question of scientific facts, concerning the 2 seas that meet, but 1 doesn't mix w/the other. http://m.youtube.com/watch?v=WzbiRqpaIAg http://m.youtube.com/watch?v=AQ16NM60FsM Can someone from over 1400yrs ago, who could neither read nor write, possibly have such detailed knowledge of, speak on w/accurate descriptions, things that has only been stumbled upon, discovered, explained, and seen in our century. W/the aid of very high tech equipment. Like the Hubble, the Sonogram, Deep sea diving equipment, etc. Using my own reasoning and logic and plain commonsense, puts the question out there. That "Qur'an," mentions in…

If i were to stand jupiter now with a telescope would i see life on earth 30 years ago? and if so : 1. if someone at that time was using a telescope and aiming at my exact position, could he see me looking at him? Also, if i was travelling faster than the speed of light and i looked back could i see the past by nanoseconds (etc), could i interact with the past through this method?

I was watching this movie where this guy fell two stories, landed on his head in the pavement, and instantly died. How realistic is this? It seems like someone would need to fall much further.

I have read that an electron and positron create two gamma photons after collision but is reverse also possible ?

It takes @2000 electrons to equal the mass of one proton, according to a quick google search. The electrons, however, have 2000 times more electrostatic force than the proton; although the amount of force could be argued to vary, I think, according to the volume of the 2000 electrons. So if you began with some arbitrarily large volume for the 2000 electrons and began compressing them, their expansive force would increase in somewhat the same way a spring's potential energy increases as it is compressed. What I wonder is at what volume would the expansive potential of the 2000 electrons equal the amount of energy contained in the mass of a proton according to E=MC^2? …

http://www.ignobel.com/ig/ig-pastwinners.html#ig2006 http://dorigo.wordpress.com/2006/10/16/the-new-ignobel-prize-in-physics/ this year the prize was awarded to Basile Audoly and Sebastien Neukirch, for their work on fractures explaining why spaghetti does not break in half: “Fragmentation of Rods by Cascading Cracks: Why Spaghetti Does Not Break in Half”, Physical Review Letters 95, 9 (2005) 95505 http://www.lmm.jussieu.fr/spaghetti/index.html you can read more about this year's prizes at the ignobel site. the chemistry prize had to do with ultrasonic velocity in cheddar cheese. the prize for medicine was for inventing an unmentionable way …

Hello, I'm sure many of you have seen examples of a DIY electromagnet, such as wrapping copper wire around a nail or bolt and hooking the ends to a battery. I have 3 questions about this. 1. What material, or metal, must be used for the object? In the examples of nails and bolts, are they steel? Iron? What characteristic must be true about that object? (ferro-magnetic? or whatever?) 2. If you had a plate of some kind, like an oven pan (something 1/4" deep or more) and wrapped the copper wire around it, could you make a plate or pan magnetic? It doesn't HAVE to be a nail or bolt, right? I think it'd be cool to make an electromagnetic surface or plate of some…

Saw a video today about 3d printed magnets with custom magnetic fields. Thought it looked pretty cool.http://www.3ders.org/articles/20160324-revolutionary-3d-printed-magnets-by-correlated-magnetics-can-change-engineering.html

OK, so I'm not in the slightest sense a physicist, but I am something of a scientist, and, well... ...no f***ing way. Right?