Effects Definition and 963 Threads

Hi, I has a question about Optical effects of special relativity. I recently watching a video about this in You Tube, my question is: Ever wonder what the world would look like as a photon?

Fascinating. I love Canadian nature films.

When you stand up, blood pressure in your feet rise the most and become appx. 180 mmHg. How then does blood flow throughout the vascular when aortic pressure is 120 mmHg? difference in P=FlowX Resistance

what is the effect of a magnetic field on a electron? please with equations

i've been trying to get the exact definition of a banked angle but so far, I've gotten nothing so i would like somebody to please tell me the definition and explain it effect on the performance of motor vehicles

Can anyone validate that phase always decreases in the direction of propagation of wave? Also if i have a sonometre wire in which i develop a transverse wave using a tuning fork and then i immerse the weight into water i.e change the tension, will the frequency also change? I mean frequency...

Hello to every one. I'm presently embarking on a problem about electron emission under applied electric field. Of course, basically there are two mechanisms for electrons to escape into the vacuum from a sample: the thermionic and the tunneling. Here I'm concerned only with the latter. As usual...

Would somebody be kind enough to explain what exactly is meant when discussing short- or long-distance contributions/effects to branching ratio calculations?

If i have a series DC motor and at say X rpm it has a back emf of 11.5v and supply voltage of 12v and i increased the supply voltage (keeping rpm the same) would the back emf stay the same? and if not would the diffrence between back emf and supply increase? Thank you.

How sensitive are neurons and chemical receptors like olfactory receptors to the chemicals that stimulate them? Can a single molecule stimulate a nerve? How many photons does it take to stimulate a rod or a cone in the eye? I ask because I'm curious as to whether or not human thought and...

hi friends, can anyone gimme a link describing the aerodynamic effect of a moving train on its vicnity space. a study about how the air around it becomes when the train moves.

A week or so ago, my high school physics teacher sent us all summer work - we have to write an article explaining the processes by which electromagnetic fields (particularly low frequency electromagnetic fields) could effect the human body. Since then, I have been wading through the large wealth...

What are the effects of tanning, like from a tanning bed/natural sun, compared to the effects on the skin from a "tan in a bottle" product? I am about as pale as they come, but some of my friends do the "fake" tan things, and I try to tell them its bad for their skin, but I don't know how or...

Voltage drop due to a resistance: Determined by resistance*current Voltage drop due to an inductance: Determined by inductance*change in current/change in time Voltage drop due to a capacitance: Determined by charge stored / capacitance Assuming applied voltage is constant: Question 1: Must...

Heey everybody,First my excuses, I'm not a natural English speaker, so there will be some languistical mistakes in my question :smile:. Now my question: I'm going to make a C-program to show relativistic effects. I would prefer to make a short 'movie' and then 'convert' it in the C-program so...

I am going into my fourth year of studying physics and math as an undergrad. So I'm starting to think about what I want to research after I graduate. So far I'm pretty sure I want to go into biophysics. Specifically, I'm interesting in studying quantum mechanical effects in biological or organic...

Homework Statement Consider a blob of luminous matter moving along a direction \hat{x} at an angle \theta to your line of sight at a relativistic speed v. (a) According to you, the stationary observer at a distance d, what is the apparent transverse velocity of the blob? Hint: you must...

One of the best sources to learn about a particular subject area in a field of study is to read someone's thesis. In this thesis, in one shot, the author has covered rather well the technique of angle-resolved photoemission spectroscopy (ARPES), many-body physics, BCS superconductivity, Fermi...

Neglecting air resistance on Earth and regardless of how fast or slow a projectile's initial horizontal velocity is when fired from the same fixed height, they will all fall at the same time. Is this because regardless of the horizontal motions, the vertical motion is the same? Can someone clear...

This is an article from 2000, does anyone know what effects the accident caused are evident now? http://www.ratical.org/radiation/Chernobyl/060700.html

This is a neat paper I found, its a quick read. http://www.isso.uh.edu/publications/A2006/2006_043_garrison.htm

hello, 'QUERY3 I think we all know about tunnel effect of quantum, Also when I was studying photoelectric effect, I studied that emission of electrons for a electro-magnteic radiation of frequency less than threshold frequency is quite impossible. But then how can we say that particle having...

I was wondering about something. If a black hole has charge, would it be measureable? Does the electric field escape the black hole even when light cannot? Or if the field does not escape the black hole, how do we know that it's a charged black hole?

Hi all, I'm doing this project entitled "determining the effects of Sulphation on lead-acid batteries", and what it essentially is, is the reason why these batteries lose their effectiveness after being left in a discharged state for a period of time. What happens is lead sulphate is formed...

Hi guys For a science fair project, I am going to test the effects of X-radiation on flash memory. I'm intending to fill a number of 16MB (15,876,096 byte) Compactflash cards with data, hash check the data with hkSFV, expose them to the radiation and hash check again for any data corruption...

Are relativistic effects "real"? At this point i'd like to detour the topic and ask why time is so special that it doesn't come back to its original measurement. After all, once all moving observers are stopped wrt to each other, and they compare their measuring rods, they measure equal. so why...

As you may know allready the Earth's rotation about its orbit is slowing down and the moon is moving farther away from the earth. I believe the figure is about 4cm a year (dont qoute me on this) and it is estimated that in about 3 billion years the the Earth's rotation will have slowed to the...

Homework Statement Within the system of the muon, which relavisitic effect increases the probability for the muon to reach the Earth surface? Length contraction of the distance to Earth. Time dilation of its mean-life. Both of the above. None the above, the probability is lower in the...

Hello, If a magnetic field aligns the electron or nuclear spins can that have a macro effect of causing torque? So for example if we had a rod and we fixed one end but allowed it to freely rotate and then aligned electron or nuclear spins would that cause the rod to rotate? Thanks, Xerxes73

I was doing some reading on the effects of air blasts from asteroid impacts when I realized that I've never seen any data of the potential effect on marine life. Since sound travels farther and faster in a liquid, wouldn't an asteroid impact in a large ocean (liquid) have a more profound...

Homework Statement A strong magnet is placed on the screen of a television set (permanently damaging the tube). Explain the following observations. a) the picture becomes distorted b) the screen is completely dark where the field is strongest Homework Equations none. The Attempt...

Assume 2 massive bodies are moving away from each other at high speed. Since the gravitons which cannot travel at faster than the speed of light, are having a hard time being exchanged by these two bodies, it must be plausible to assume that the gravitational pull between these two bodies...

what is effective mass? and how does it effect both the electrical and optical properties of a crystaline structure?

If the universal gravitational constant was changed from 6.67 X 10^-11 to 6.67 X 10^+11 what would happen? Hi. I am doing a physics project for grade 12 physics. Here is the question: The universal gravitational constant, G, is suddenly changed from 6.67 X 10^-11 Nm^2/kg^2 to 6.67 X 10^+11...

What causes the magnetic force between 2 magnetic poles?

I think I know why we can't time travel backwards. I have been researching like mad at my skool and I think i have the answer. If I'm wrong, PLEASE tell me. This is for a research paper, and I am trying to navigate my way out of the math and stuff: We are in the present, while physical...

I get the photo-electric effect but I am just wandering, is that the only principal on which lasers function? I mean do lasers "cut" materials by ionizing the atoms?

Hello! The question about which oil that is the best to fry in, or to deep-fry in, should be examined, if it hasn't been already. Is it possible to set up a function b_f(T), where b is the "badness" of heating up a certain kind of fat f to temperture T? For example, saturated fat can be...

So I have a couple of cheap <5mw red laser modules. And I also have mirrors. And I'm bored. You can guess what happens next (profit). Some really strange effects that I'd love to know the origin of: 1.) The speckle effect from the laser beams - it doesn't actually matter where your eyes are...

What is coherent length? and how it is affected interference

question: do the effects of relativity that would manifest on objects approaching the speed of light (increasing mass, decreased time, etc) also affect photons? Photons are, after all perhaps the only things that routinely travel at that rate.

Homework Statement A refrigerator is marked 80W and 250 V. What is likely to happen if the voltage falls to 50V? Homework Equations P=V^2/R V=IR The Attempt at a Solution --------------------------------------------------------- R=V^2/P =250*250/80 =781.25 ohm Assuming the...

ok, this is a couple of questions in one where is water stored in your body? i know some is stored in your blood stream, but then does it ever get emptied out and if it does then why are some athletes not allowed to drink a lot of water i heard that they will get to much water in there...

Rough (not smooth) surfaces often appear to be darker in sunlight when they are covered by water.How can we explain this physical phenomen?

(Not Spam :-p) I did a bit of reading today on partial reflection when using ultrasound. I was reading about a pregnancy gel that is applied to the womans stomach when detecting a baby. To put it briefly, if the ultrasound transmitter is held away from the body a lot of energy is reflected...

Can viruses be used to diminish the effects of genes? My friend said they couldn't be because we didn't understand enough about the mechanisms behind viruses and she gave some other reasons...but she was in a hurry and she might not have understood what i was asking...so I was wondering if a...

Hello all, I hope I'm posting in the right sub-forum here, because I'm quite new and don't really know my way around yet. Not to mention that the topic encompasses quite a few different areas. The subject is nukes in space. Or more specifically, the visual effects they should produce...

I stumbled upon this and have some doubts. First let me explain what is Earth Hour On 31 March 2007, 2.2 million people and 2100 Sydney businesses turned off their lights for one hour – Earth Hour and they are planning another one in 2008 http://www.earthhour.org/" I understand the...

Now according to special relativity when in the case of two people traveling at different speeds have their own clocks running differently depending on their velocity I have understood the theoritical part of this that as c=d/t and as d= space and t= time and c= velocity of light . thus...

When an object, such as a wheel, rolls across a surface, static friction allows it to move. When taking into account rotational motion accompanied by translational motion across such a surface, what effect does static friction have on it other than allowing the object to move...