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Speed of Light
Denoted with the symbol "c," the speed of light is 299,792,458 metres per second and is often rounded as 300,000 kilometres per second or 186,000 miles per second.
1,290 Questions
What is the speed of light in miles per second?
Answer In vacuum, the speed of light is 186,282.397 miles per second. Answer The speed of light is not a constant. It is slowing down. zthere have been several experiments that prove that light is slowing down.
186,282.4 miles per second.
Do magnetic fields store energy?
of course, they do. A research project show that a motor constructed with magnets at specific directions & positions can run for atleast 100 years without break.But the magnets are not to be disturbed & also they don't have to be charged
It happens in my grand cherokee. somone told me its a loose ball joint in your transmission. A: IF THIS CONDITIONS OCCURS WHEN THE ACCELERATOR IS IN ONE POSITION (STEADY THROTTLE) THE PROBLEM IS MOST LIKELY TO BE A DEFECTIVE THROTTLE POSITION SENSOR.
It about 2*10^8 m/s.
The speed of light is slower when passing through glass, or any other transparent substance, compared to the speed of light passing through a vacuum. The actual speed depends on the refractive index of the glass, which depends on the composition of the glass.
How does observing the moons of Jupiter measure the speed of light?
It has to do with the amount of time it takes the the light from the moon of Jupiter to reach the earth depending on if the earth is on the same side of the sun as Jupiter compared to the opposite side of the sun from Jupiter. Because of the time difference for the light to arrive, the orbit of the moons appear late in passing behind or in front of Jupiter when earth is on the opposite side of the sun from Jupiter, compared to when it is on the same side. This time difference is then the time it takes the light to travel the diameter of the earth's orbit around the sun. Velocity is then simply distance divided by time.
Of course you still need to know how to calculate the diameter of the earth's orbit around the sun in the 17th century, but that's another answer!
Look up the astronomer named Ole Christensen Rømer he was the one who noticed this first, his estimate was 11 minutes difference, and resulted in a figure of 130,000 miles per second. 186,300 miles per second or 299,792 km per second is the actual speed.
Hwat is the speed of light measured in meters per second?
The speed of light in a vacuum is about 299,792 kilometers per second, or approximately 186,282 miles per second.
What is the speed of light in km?
The speed of light in kilometers per hour is 10.8*10power8 km/h, or 1,079,252,848.8 kph.
Check the math:
Light travels at 299,792,458 meters per second. There are 1000 meters in a kilometer, so 299,792,458 mps becomes 299,792.458 kps. There are 60 seconds in a minute, 60 minutes in an hour, so:
299,792.458 x 60 = 17,987,547.48 kpm (kilometers per minute)
17,987,547.48 x 60 = 1,079,252,848.8 kph (kilometers per hour)
If you traveled at the speed of light how long would it take you to reach earth's nearest star?
Actually, the closest star to Earth is Sun which would be reached in a little more than 8 minutes.
As for other stars, closest one is Proxima Centauri. You'd need to travel for 4 years and 2 months to reach it at the speed of light. You may or may not know that you have asked a delightful trick question. If I were traveling at the speed of light [impossible, of course] how long would it take me to get to earth's nearest star? From my point of view, the trip would be instantaneous. It would also be an instantaneous trip if I traveled to a destination 100 million light years away. Time completely stops at light speed. Observers on earth would conclude that the trip took me 8 minutes. We would all be right, within the scope of our individual frames of reference.
The relativistic mass of the particle is given by the Lorentz factor multiplied by the rest mass: m' = m/(sqrt (1-(v2/c2)). The recently finished Large Hadron Collider is said to accelerate protons to about 99.999999% the speed of light, or 299,792,455 m/s. When this, the speed of light (299,272,458 m/s), and the mass of a proton (1.6726x10-27kg), are put into the equation, the relativistic mass comes out at about 1.1822x10-23 kg. Compared to masses encountered in every day life, this is quite miniscule.
How many times does light go around the Earth in one second?
Light has a speed of almost 300,000 km/sec. The circumference of Earth is 40,000 km. Therefore, in theory, light can go around Earth 7.5 times per second.
However, since light travels in a straight line, it will not go around the earth unless helped by being reflected from other bodies.
Is it possible to get more speed then light to the particle with accelerator?
No, according to the theory of relativity, it is impossible for any particle with mass to reach or exceed the speed of light. Accelerators can increase the speed of particles to high fractions of the speed of light, but they cannot exceed it.
What is the answer to life the universe and everything speed of light 3 teaspoons?
42 or forty-two is the Answer to the Ultimate Question of Life, the Universe and Everything. This Answer was first calculated by the supercomputer Deep Thought after seven and a half million years of thought. This shocking answer resulted in the construction of an even larger supercomputer, named Earth, which was tasked with determining what the question was in the first place. The Earth was destroyed by the Vogons five minutes before its ten-million year program to find the Ultimate Question,
Where is the reverse light switch on a 2000 s10 4x4 5 speed?
On a 5-speed I'm pretty sure it is right next to where the shift tower gets bolted to the trans. It is a little ball that rides on the shifting rail. Should be pretty much the only sensor that is on the top center section of the trans.
It sounds like there could be an issue with the alternator or the electrical system in your car. The drop in idle speed and juddering indicate a potential problem with the engine. The flickering interior lights and headlights suggest an issue with the alternator not properly charging the battery. It's best to have a mechanic inspect and diagnose the specific cause to address the problem correctly.
when you start up, you have to go to configure, and then go to configure again, I am running windows XP home edition 2003. I turned the sound off, and then enabled monotone sound. This caused pcsx2 to be compatible with my system, and actually run. I also installed in the plugins folder, my basic driver that was for my display from windows. Then it ran smooth, and has ever since. If you want even more speed then you need to turn on Asycronous read, for your CDVD drive, and enable the VUI checkbox. if you have any more questions email me at brandon.stevens4@yahoo.com
hope this helps, and I am still trouble shooting more .dll files and drivers to get super speed out of this thing, so maybe one day I can beat FFX in less than one day.
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also try lowering the resoultion to 600x400
Refraction: light speeding up and slowing down, between mediums.
When light travels from a more dense material to a low density material like glass to air, light will be refracted away from the normal.
When light travels from a less dense material to high density material, for example from air to water, light will be refracted towards the normal.
Similarly, the refracted ray is a ray that shows the direction that light travels after it has crossed over the boundary. In the diagram, a normal line is drawn to the surface at the point of incidence. This line is always drawn perpendicular to the boundary. The angle that the incident ray makes with the normal line is referred to as the angle of incidence. Similarly, the angle that the refracted ray makes with the normal line is referred to as the angle of refraction. The angle of incidence and angle of refraction are denoted by the following symbols:
= angle of incidence
= angle of refraction
--- = Normal 90'
Well, Newton itself proposed that photons went changing betwen two states, one for reflection and another one for refraction. ¿But what would it mean exactly?
Perhaps in the reflection state the photon would "feel" a repulsive interaction about matter, while in the refraction state it would be attractive. ¿But how to avoid photons interacting randomly with any near particle or nucleus scattering themselves through the glass or the prysma?
The answer to this could be that this "photonic interaction" only can interact over photons that have a speed below a maximum. This maximum would go increasing with distance respect to the originary particle of the interaction. This way only the atomic nucleus at certain distances would interact with the photon, in a way similar to gravity or its oposite.
When a photon came near enough to the glass surface (a change of density) it would "feel" a force of attraction or repulsion. In the first case it would penetrate the glass surface and in short it would be "flying" enough in its interior to feel a total force of 0 (in spite of changing state). In the second case of repulsion the photon would be reflected with the correct angle to the normal.
Here I don't speak about the direct interaction with atoms and electrons. But I read somewhere that also reflection/refraction was a quantic process of absortion/emission, in wich I cannot agree in any way. An atom or electron alone "doesn't know anything" about the place that it occupies in the glass surface and its orientation with respect to its normal. So, ¿how could it emit the corresponding photon in the correct direction in reflection or refraction? You can never suppose intelligence in particle interaction.
About the prysma effect with different colors it's more difficult. According to the above hypotesis it should be because of photons having different inertia or speed. Because they are supposed to have in vacuum the same speed (in spite of Newton thought) they should have a different very small "mass". Mass in respect to the photonic interaction proposed. Whether it should be considered an extension of gravity force into short distances I don't know.
Could it be the speed of this change of state what defines photon frequency who knows. Also it could be possible that in fact there was some very small difference in speed between different frequency photons (explaining prysma effect).
Lowest speed in glass could be explained by some temporary time slow down effect of the interaction (overmost with higher frequencies). This could also explain why blue light bends more in the prysma surface in spite of having the same c speed in vacuum.
I know assuming this hypothesis is very imaginative and contrary to the main believe but...
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For something to exist it has to be "simulatable" with enough CPU and memory
How does traveling at light speed negate time?
Answer:
In fact light speed is not the question you should be asking. It should be "when traveling at the universal speed limit, why does time slow down." The answer is that no matter how fast you are traveling the universal speed limit (equal to light speed because it goes max speed) is viewed the same. The theory is that all clocks/measuring devices are morphed in the same way so that when it measures the speed limit it is still the speed of light (universal speed limit)
AKA, all clocks, even biological, are slowed down as it travels faster through space time. So your perception is slowed and your recognition of this perception is slowed, so for you time appears the same. If you travel 95% the speed of light and flick on a light, it wont travel 5% the speed of light away from you, it will travel 100% the speed of light away from you due to your space time warping. This also happens the nearer you are to a large mass. aka a black hole. It also warps the space time around you.
Alternate points of view... Take for example, you are traveling in a car at any speed. You pass cars traveling slower than you are. They appear to travel backwards. This is of course only relative to YOU. They are actually traveling forwards. If you think of yourself in the car as the speed of light, and the other cars as time, that's how it works. Of course, light travels SO fast that it bends TIME only relative to YOU. It's not like the whole world actually stops or slows down. It's only you who feels it. Just like overtaking a car. But that's only a simple explanation.
In laymans terms, traveling at light speed means that you are traveling at a speed greater than the speed of time. Therefore time is at a fixed rate, and the speed that light travels is at a fixed rate also. So to travel light speed actually gives you an advantage over time itself. It has been mathematically determined that the longer you travel at this speed, the more advantage you gain, so it would be possible for a child to travel at this speed for a computed time, and return to see that several generations have passed while he/she would have only aged the number of days / months traveled in spaceship time.
Another layman's view:Traveling at light speed really doesn't negate time. It is just that time is relative, as is velocity. My computer seems motionless to me, but an observer looking down at the solar system would see me and my computer moving quite rapidly. If you could get into a ship and accelerate to very near the speed of light and travel for ten earth years, your personal experience of time will not seem to you to have been any different from when you were on earth. Every moment would have passed normally for you, without anything seeming odd. It's just that at the end of the trip, you will have experienced it as only a fraction of the ten years. It will seem impossible to you that 10 years has gone by on earth. Time will have gone by differently for you than for earth. The same thing would happen even if you could reach the velocity of light. Upon decelerating, you would not report anything unusual regarding your experience of the passage of time; time will have passed for you as normally as ever. But you will notice that you spanned a huge distance instantaneously. You would find it nearly impossible to believe that dozens, hundreds or thousands of earth years had passed by during that instantaneous surge. From your vantage point in that ship, you could as easily ask: How does traveling at light speed accelerate time (for earth)? It doesn't.If flying at light speed for an Eon is it possible to go beyond the universe?
The universe is about 90 billion light years across. An eon is about 550 million years. Flying at the speed of light for 550 million years you would travel 550 million light years, less than 1% of the distance across the known universe. So, probably not. It would make no difference how long you travel at light speed. If you travel for a billion trillion eons, you would still not pass through the boundries of the universe. For one thing, you would have a serious problem timing your journey, since for you a trip of any length would seem instantaneous.
What is the difference between refraction and reflection?
Refraction occurs when light changes speed and direction as it passes from one medium to another, such as from air to water. Reflection, on the other hand, is when light bounces off the surface of a material, like a mirror, and changes direction. Refraction involves a change in speed and direction, while reflection involves a change in direction only.
The question states an incorrect premise. As an object approaches the speed of light, neither the object nor light "goes slower". At relativistic speeds (speeds of about 1/100 of the speed of light or faster), the faster a body travels, the slower time passes for that body compared to a "non-moving" frame of reference.
Light is measured to travel at the same speed for all observers, no matter what the observer's speed is. For example, suppose you were in a space ship traveling at 1/2 the speed of light, and that space ship was racing toward a star. You would measure the light coming from that star at c, the constant speed of light. Now suppose your friend was in another space ship which was "stopped". Your friend would measure the same light coming from the same star at the same speed of c. The difference between you and your friend is your friend would age more quickly than you would, because time passes more slowly for you while you are traveling at relativistic speeds.
It is also true that, as a body approaches the speed of light, it develops something called relativistic mass. So you, your space ship, and everything in it gets heavier when you travel at 1/2 c. Because the space ship gets heavier, it becomes harder to push (it has greater inertia), and therefore it is more difficult to accelerate the space ship further to make it go even faster. So it is true that, as you approach the speed of light, the harder it is to approach the speed of light. The mathematics predicts that, at the speed of light itself, your relativistic mass is infinite1, and so is your inertia, therefore you can never "push" something to make it actually go as fast as the speed of light.
Light itself is a bit of an enigma. A photon - a light particle - has zero mass, but it does have momentum. Zero mass also means zero relativistic mass, allowing the photon to travel at c. In fact, not only can a photon travel at the speed of light, it must travel at the speed of light - a photon exists only while travelling at the speed of light - it ceases to exist if it stops or slows down.
1 Relativistic Mass = Rest Mass / SQRT ( 1 - v2/c2), v is the velocity and c is the speed of light.
Answer:
I think I know where this question is coming from, but you made a bit of a confusion perhaps? Basically, the closer you get to the speed of light, the slower time goes? Is that what you meant to say? Relativity is very hard to get your head around, because you need to drop the concept of velocity altogether, and only think of relative velocity, and time, and even length in the direction you travel in (I did say it would be weird!). Light will ALWAYS overtake you at 300000000m/s. It doesn't matter how fast you go, or how slow you go relative to the source of that light, it will always, if travelling through a vacuum, travel at the speed of light given, and this value is a constant value called C. Its the space speed limit that is policed by the laws of physics. But, if you did travel very fast (close to C), there would be a time dilation relative to people here on earth. And this was first discovererd when they realized that particles that came down to earth from the upper atmosphere had a half life such that they should have decayed before they made it to the ground, however, because their velocity relative to the earth approaches C, they actually lasted longer! This same principal would apply to humans, so it would be possible to sit in a space craft, go close to C, come out 1 year later, and for all your friends and family and everyone you know to have grown old, whilst you'd only be 1 year older, because more time would have passed on earth than would have passed in your space craft, and this is called the time dilation effect.
Would a lighter go faster than a truck?
No, a lighter would not go faster than a truck because a lighter does not have an engine or the ability to move on its own. Trucks are designed to move at higher speeds due to their powerful engines and larger size.
How long would it take to get from earth to Saturn traveling at the speed of light?
The answer depends on where Saturn is in relation to the earth. Since both planets orbit the sun at different distances and different speeds, this distance varies over time.
Check out this webpage- http://www.fourmilab.ch/cgi-bin/uncgi/Solar/
It lists the distances from earth to the other planets and the sun, updated constantly. Right now, the distance from Earth to Saturn is 10.326 AU. One AU is equal to the mean distance from the Earth to the Sun; 149,598,000 km.
So we calculate the answer taking the current distance in AU, converting to kilometers, then dividing by the speed of light (300,000km/sec, roughly)
10.326 au * 149,598,000 km/au = 1544748948 km (1,544,750,000 km if we're keeping track of significant digits).
Divide by c- 1,544,750,000 km / 300,000 km/s = 5149.2 seconds.
Convert to hours by dividing by 3600 (60 seconds / minute * 60 minutes / hour)
=1.43 hours or so.
[you can get a more precise hour by using a better value for the speed of light, but the answer will be very close to what is given.]
Are 12 volt lights cheaper to run than 240 volt lights?
there is no such thing as a free lunch power consumption is directly proportional to current draw firstly you need to convert mains voltage to12volt via a transformer the advantage to 12 volt lighting is only recognised when using lower wattage halogen or led lighting. as far as i am aware the use of a mains voltage 100watt globe draws the same if not slightly less than a12volt 100watt light as the transformer uses power (in the form of heat) to produce 12volt at least this is what all my "sparky" contacts tell me . my own experience has shown led lighting to be the way to go , i am using a small deep cycle battery ,a small solar panel and leds so far so good with more and more 12volt led lights becoming available
The Yamaha YZ250F has a top speed of around 80-85 mph, depending on various factors such as rider weight, terrain, and modifications to the bike. It is a high-performance dirt bike designed for motocross and off-road racing, where acceleration and agility are more important than top speed.
