Effects Definition and 1000 Threads

Hey, I was just wondering if anyone knew of the specific effects a typical bathroom cleaning product would have on a human even with just a little exposure to the skin? Is it still hazardous to the blood stream and mucus membranes?

What does modern physics say about "uncaused" effects The old Cosmological argument says that everywhere we see an effect like motion or change we see a cause. This is a useful way of looking at everyday things. It goes on to say that regressing they form a chain. This is something we...

Hello all, I am doing a high-school grade science fair on the effects of aging on synesthesia. Well, at least that's what it tests, but in reality, it's the other way around, almost. Synesthesia, while, indeed, being a genetic condition, is a condition of the brain. Therefore, if the brain is...

If the sun were to explode would the effect on Earth be simultaneous or would the explosion of the sun affect the Earth after eight minutes

Hi, I'm not sure if I'm at the right place to write this message, so please excuse me if I'm not. I have read a bit about tidal forces, but I still don’t understand what they are, how they act on different body masses, etc. So, I thought I could find answers here. I would greatly appreciate it...

Hello, I was curious about any thoughts any of you might have concerning an interesting result I found today. While I was annealing a 32 cm wire of nitinol at about 300 C, which for its diameter is about 1 amp, I noticed that when the wire was made less tense, it moved up and down...

Because if would seem to me, that planets suffer relativly little disturbance from these collisions, that is, they're not pulled away from their main star, by other massive objects passing nearby. (Or in most cases they're not) During the 4 billion year history of our solar system, the Earth and...

Homework Statement an air bubble originating from a scuba diver at a depth of 18.0m has a diameter of 1.0cm. What will be the bubble's diameter when it reaches the surface? assume constant temperature Homework Equations I'm not sure what equation to use for this... The Attempt...

Last night I watched a program on TV that made the statement that in the interior of our sun the gravity is so intense that a photon of light can travel only several thousandths of an inch per minute. It takes hundreds of thousands of years for a photon of light to travel from the interior of...

Hi there, Can anyone answer a few questions I have about chernobyl and related. I am doing some research on something related, and its hard to get good information about this. Here they are. 1) - Can someone explain the steps of the disaster? I mean, let's say is the cooling system...

This is a fairly simple question. I have some ideas of the implications but I have no idea what the total effect would be. My idea is to take an extremely powerful magnet. The strongest magnetic force that we can aqcuire. Then you take it into the vacuum of space and spin it so that north...

when a satalite orbits the Earth my text states that it is constantly falling into the Earth as it moves tangentially -- my question is why doesn't the speed of the object falling into the Earth increase radially since it is acted upon by the force of gravity, a force of gravity would cause an...

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Forgive me if this is anything but trivial, but my physics teacher said in his lecture the other day that gravity has nothing to do with a pendulum coming to rest? how could this be? according to him, the reason for the pendulum coming to rest is air, but when i inquired about puting one in a...

The Earth takes the shape of an oblate spheroid due to its rotation and so gravity is stronger at the North/South Poles while the Equator has a velocity relative to the Poles. When we consider General Relativity (the effect of gravity on the passage of time) together with Special Relativity...

Seriously, it seems like the cannabis plant is built for the intelligent, inquisitive, imaginative, ect. mind. Not only do my senses, reason, intuition, and imagination expand on marijuana, I also understand science so much more. There is something it does to your logical faculty that makes you...

My question primarily relates to an object planing across a fluid surface. First, does the Venturi effect only apply to enclosed systems such as pipes? My true motives are to understand the physical forces acting on a surfboard as it travels down and across a wave. I’m currently in...

I thought of putting this in the social science or philosophy forums, but I don't want to get too abstract about it. This is just something I've found a little confusing during life. :redface: When great events and accomplishments happen, we celebrate them. We throw parties and serve lots of...

It's my belief that if some one was at the equator or the south pole there weight might be differernt Sum of F = m a = mg- N a = v^2/r at the pole the distance from person to rotational axis is 0 so a= 0 and then mg = N On the equator the velocity can be calculated from 24 hours to go...

Speed of Light c= \frac {1} {\sqrt{\varepsilon_0\mu_0}} Phase Velocity v= \frac {1} {\sqrt{\varepsilon\mu}} Electric Permittivity of Free Space \varepsilon_0 = 10^{7}/4\pi c^2 \quad \mathrm{(in~ A^2\, s^4\, kg^{-1}\, m^{-3}, \, or \, F \, m^{-1})} Magnetic Permeability of Free Space...

Does anyone have any information on diode failure? I'm interested in knowing how diodes can fail and what happens when they do fail. Specifically, what conditions of a diode will cause it to fail to be a closed circuit either direction criteria (like, become as useful as a wire)?

Here is an article I think you might enjoy about a topic that has challanged us for years. Its on paradoxes in time travel explaining a lot of the problems involved. Here is the link... http://ezinearticles.com/?Paradoxes-in-Time-Travel&id=224204"

I was surfing some old exam questions and I found a nasty one... They asked to prove the existence of fringe effects of the electric field at the edges of a plate capacitor, using Maxwell's laws. In class we always assumed the ideal capacitor without fringe effects so I'm having some kind of...

Can anyone describe what the effects of the Euler force are? If you're not familar with it, it is a fictitious force that arises from a rotating object undergoing a change in rotation speed. Can someone tell me what the effects of this fictitious force are?

We will imagine a core ring of magnetic material (hi mu) encompassing the earth. At one station, we wrap a couple of loops of wire to form the primary winding of a transformer - say in Los Angeles. At another part of the earth, say Paris, we wrap a few turns to form a secondary winding - our...

I am a science fiction writer and I need some help with developing a plausible alien species. The species has to end up technologically advanced. What would be the effect on a species that evolved on a world with 74% nitrogen and 25% oxygen (other gases remaining similar to Earth)? Thanks for...

In another thread, someone was talking about cosmological expansion effects on planetary orbits. (Actually it was about lunar orbits, but I think planetary orbits are more to the point). Through a somewhat round-about path, I eventually got to thinking about the following question. Suppose we...

If I were to take a permanent magnet and hold a piece of, say iron, a fixed distance away there would be constant attractive force generated between the two bodies. If I were then to cool the magnet down towards absolute zero, but keep the temperature of the iron constant, what changes would I...

Hello, I've learned from my study of oscillator circuits that an inductor has some inherent capacitance in it due to the distance between the individual windings. I've heard somewhere that if you place a permanent magnet close to a coil that it will behave like a capacitor and I was wondering...

I'm curious as to when people think the soul leaves the body. I think most people's first reaction would be, "at death." This was my belief as well (if there is a soul). However, how can one define death? The idea was never a problem until I factored in new scientific technology called cryonic...

1)does a magnetic compass needle have high remanence or low remanence? 2)in a shell type transformer core required to carry DC in addition to normal AC, what effect does the introduction of an airgap have on AC performance of such transformers.

Spin-orbit effects splits !? Hi AllL the spin-orbit effect splits the 3P-->3S transition in sodium(which gives rise to the yellow light of sodium vapor highway lamps) into two lines 589.0 nm corresponding to 3P sub 3/2-->3S sub 1/2 and 589.6nm corresponding to 3P sub 1/2 --> 3S sub 1/2. How...

Can nonvisable light effect photograph's when your taking a picture? I know that if there's enough radition that it can effect film. But if there's a small amount of nonvible light like ultraviolet or infrared could it be possible for it have an effect on flim.Woul it also be possible for it...

Hi. Can anyone explain to me what spin-up effects are? The context is a waterwheel that consists of an ordinary wheel with papercups with holes in the bottom suspended along the rim. It is stated that for this wheel there are two sources of damping: ordinary frictional damping and "inertial"...

As someone returning to a study of physics after many years, I would appreciate any help and comments on my unresolved questions after reading “popular science” type information regarding quantum effects. In considering (that old chestnut!) the “twin slit” experiment to demonstrate the quantum...

"Electrons are accelerated by a potential of 350kV in an electron microscope. Calculate the de Broglie wavelength of those electrons taling relativistic effects into account" I attempted the following: W = W(kin) = 350keV now W(kin)= (1-gamma)mc^2 so, now one could solve for...

I'm a little confused about what happens when we connect two objects by a wire. Does this just equal the potentials, or does it equal the charges? Also, does this depend on the nature of the objects (is it different for e.g conductors or capacitors?) thanks for your help

What would be the change of the induced emf in the secondary coil of a two coil system ( without ferromagnetic core ) if both the amplitude and the frequency of the current in the primary coil would double?: emf would stay the same emf would be halved emf would be 4 times larger...

Hi all, I'm currently taking a course in introductory cosmology, last quarter I had an introductory course in plasma physics. Something that's been bothering me through the course of my cosmo class is the fact that plasma effects are entirely ignored even though it's acknowledged that, for...

The conductivity of pure germanium increases by 50% when the temperature is increased from 20 degree C to 30 degree C. What is the energy gap E_g between the conduction and the valence bands of germanium? b) For silicon E_g = 1.1eV, what is the percentage change in the conductivity for the...

its a drug. what is it perscribed for. and what are the effects.

If I am to understand correctly, light speed is the speed at which light travels through space. As I also am led to believe, our sun is some four lightyears away. I recall hearing that since it takes roughly four years for light to travel from the sun to us, the light we see during the day...

can anyone tell me what parts of the digestive secretion have high basic pHs of 8-9.0...and they gradually increase in effectiveness for certain jobs

I asked why a bomb going off on one side of a mountain would seemingly affect gravity for people on the other side of the mountain about a year ago. Experienced in Nam with valley floors about 2 miles apart. That's a lot of rock and soil seperating those who experienced this from the explosion...

What are the possible effects of pressure changes of the surrounding gas during crystallization. Can such changes be detected on the resulting crystal.

i am trying to simulate the spiralling motion of a coin that is rolled on a table.i am having three equations... 1. the gyroscopic moment equation. 2. the conservation of energy equation. 3. general kinematic equation. three unknowns...curvature radius,precession velocity and coin...

I did look through this forum for other threads on this topic, but didn't find any. If this has already been discussed, then please let me know where the thread is. A common model for the expanding universe is an expanding balloon upon which some dots have been drawn. A well know flaw in this...

Di-hydrogen monoxide (DHMO) was an excellent joke of a student, showing how easy people can be fooled/conned when appealing to their noble instincts - safety, protection, defence. Of course we have to protect the world, and when there is any acute danger, we must act. Apparently, we need that...

Hi there. i need some help from you guys can any of you tell me how to prove the effects of negative feedback mathematically? i need to prove that negative feedback causes -reduction in gain -reduction of distortion -increase of gain stability -increase in bandwidth increase in input...

This is an analysis involving general relativity (GR). Let a spherically symmetric, uncharged, nonrotating star (not a black hole—that comes later) have an escape velocity = infinitesimally less than c at its surface. Then its r-coordinate radius (also known as the reduced circumference and...