Physics

Hey, I'm doing a assignment for school and the question is "does the density of a liquid affect refraction" Im using a glass jar with various liquids and a laser point as the light although no matter what liquid i use the light stays straight all the way thru and out the otherside. Am i doing something wrong or does the density not affect refraction

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

What does make the Earth be orbiting the Sun? Would there be a way to change Earth's orbit?

Okay so i just read an interesting article on a new superconductor that acts as an insulator, superconductor, metal and magnet aswell as having a very low critical temprature. Now i started investigating exactly what this means, its all very counter intuitive. Im presuming these properties exist in different conditions. The article got me reading into these various properties and i eventually got confused with some of the basic stuff. For example if a super conductor has no resistence at all then ohms law no longer works? Its also got me confused as to the exact nature of volts and amps as i interpreted them. So it took me back to some of my roots in elecrics, sp…

I have a degree in biotechnology. I run assays, do research, I'm a lab technician. Most people in my field will generally do this for a living. What do people with bachelors in physics do for a living? I like to think they do the following: -Do research at a university/company -some kind of programmer? -Teaching Assistant -Tutor -teach (some where) ~is this right? ~EE

Hi. A space probe/craft traveling at very high speed, in need to slow-down or land on a remote destination, has to waste its energy or is there a method that can recover some of it and store it for later takeoff or whatever energy consuming actions needed ?

The new edition of the free physics text in pdf format is now online at http://www.motionmountain.net The new edition includes many new topics, pictures, puzzles and tables; it keeps the promise to be fascinating and challenging on every page. The text now explains the geometric phase and its uses in optics, the limited, three-dimensional colour space of humans, how artists use it, and the twelve-dimensional colour space of mantis shrimps, the fascinating physics of the human voice, the singing of high-voltage lines, the knots possible in Maxwell's equations, and the reasons not take Descartes' philosophy seriously, following his own advice, because of the finiteness o…

Hey can someone explain how are these equations deduced?? Or anything interesting u have to share about these equations.

You know, if you throw balls (upwards) while on a moving platform, which I did; the platform had no walls or any of the sort and the ball simply moves away from me landed on the ground. I presume this was because of the wind, I am not so sure... Now, I did this same test while I was inside a bullet train, and, of course the train had walls and roofs so there was no wind, and the ball simply landed on the palm of my hand. Please explain, is wind resistance the sole reason why the ball was being carried away as I threw it up? I mean, if you'd imagine. should the ball be displaced in air as I threw it up without the required force to bring it back to my palm? …

And what's a black hole made of?

Hi. In your opinion, would a plain speaker propagate sound reasonably fidel underwater if lowered to 30m depth inside a hermetic plastic bag filled with light vegetable oil and if needed, a little air left in by the moving coil ?

So here I am just a regular kid wondering in the realms of physics. Yes, nuclear bombs, TNT, whatever it is - products that explode produce such a substantial amount of force. Nuclear bombs when in effect produce so much force it could level an island, it is utterly devastating. However I want to bend the realm of physics a bit. Assume, just, assume we humans have the capability to generate the force equivalent to that of a nuclear bomb in a single punch/jab. What would happen? Will there be explosions like we see in nuclear bombs and TNT's? Please dear people of science forums, enlighten me. Thanks .

I was reading how earths core is heated by radio active decay and I was wondering if someone picked up a piece of uranium or plutonium that let's say the USA was Making a nuke from would it be hot to the touch? Isn't it mined for? If someone touched the raw material would it feel hot. If so how hot?

Specially Sun's energy?

And what can we do with it? What's it for?

Would it explode the Earth?

And would it change Earth's orbit?

What are the exactly steps to do it? What kind of machines are used?

As title says, i wanna know how I could destroy the Earth.

This might sounds weird, but I'm planning to carry or stitch some battery-powered PC case fans inside my jacket to fight the heat outdoor. I live in Indonesia and the air humidity level is always high for most part of the country, and it makes outdoor activities almost impossible to enjoy, except for the first quarter of the day and the evening, or during cloudy days. My question is, should I set the fans as exhaust, intake, or exhaust-intake setup? And should the exhaust points upward or downward? Thanks.

"Chris Nagel heads an independent lab that researches the fundamental physics of matter (especially metals) in its relation to energy (light). … Currently Nagel focuses on applying low levels of energy (optical and thermal “tailoring”) to select combinations of metals to alter their base properties in multiple ways. Such tailored metals have achieved distinctly unexpected levels of transparency, conductivity, hardness, magnetism, and catalytic activity, both as permanent and transient variations. " https://techtv.mit.edu/videos/26167-chris-nagel-light-the-architect-of-matter

So sounds crazy but disregarding the different nature of thoose 2 kinds of waves , what would happen when they are propagating in the same medium. From quantum mechanical prespective for instance do the two wavefunctions interact each other someway. What would be the result . Or let me simplify my question . What is going to be if you talk to an antenna since it carries some EM radio waves and you add it your acoustic vibrations ?

I have a ski board Magnet that makes it float in the air has broken I do not know his name or type magnet in order to buy it I'm putting in your hands the red color images here have damaged portion http://im46.gulfup.com/rhsaMf.jpg http://im46.gulfup.com/Ym2t7X.png http://im46.gulfup.com/XkiqPo.jpg thanks for everyone

What is the corresponding frequency of AC that is generated in bones due to their piezoelectric properties when is applied acoustic pressure in the frequency range of human voice for instance ?

Have a quick question about FAIMS. Have a friend working on ion spectroscopy but there was one thing we couldn't figure out. In some devices the drift gas to oppose the direction of the ions, while other designs have the drift gas from the same direction as the ions. We can't figure what difference this would make to the analysis, or why one is used in preference to the other. Any pointers or help greatly appreciated.