what is the speed of sun light  to earth?
402996
Light travels at 186,000 miles per second, or 300,000 kilometers per second.
75221
I'm not a physisist nor an astronomist, just crunching some numbers.\n\nAllowing that the speed of light is 186,000 mps, then:\n\nMercury (36) = 3 1/2 minutes\nVenus (67.2) = 6 minutes\nEarth (93)   = 8 1/2 minutes\nMars (141.7) = 13 minutes\nJupiter (484) = 43 minutes\nSaturn (887)  = 1 hour, 19 minutes\nUranus (1785) = 2 hours\nNeptune (2795)= 4 hours, 10 minutes\nPluto (3675)  = 6 1/2 hours\n\n*number in () is the distance in millions of miles from the sun\n*all times were rounded
890719
Why shouldn't they be the same?  The distance between the Earth and the Sun doesn't change much in one day.  And even if you argue that the rotation of the Earth gives is a relative speed that should be added to (or substracted from) the speed of light, you're forgetting that the speed of light is a constant.  You can't add or remove anything to it.  If you're on a train going at the speed of light and you turn on a flashlight, the "total relative speed" of that light won't be twice the speed of light.\n\nAs for how can this speed me mesured, there's an experiment that uses mirrors and a laser.  Those flat mirrors are glued around a cylinder and they rotate.  (It could also be a rotating screen with holes in it.) When the mirror is positionned right, the light comes back to the laser.  Knowing the distance between the mirror and knowing the frequency of the rotation, we can calculate the speed of light by mesuring how much times it takes for the light to go to the mirror and come back.  TRY FIZEAU OR FOUCAULT ON GOOGLE.  He's the guy who did that.
618284
light travels fastest than anyone in the world\nhis speed=1,079,252,848.8  kilometres per hour
180315
Since space is very close to being a vacuum, the only way energy can travel from the sun to the Earth is through the process of radiation (as opposed to conduction or convection).  Radiation relies on energy traveling in electromagnetic waves through the vacuum and hitting Earth (thus heating the Earth).  In a vacuum, all electromagentic waves, light included, travel at exactly 299,792,458 m/s, this comes out to about an 8 minute travel time from the surface of the sun.\n\nBut your question of "How many seconds does it take for the sun to warm up the earth?" doesnt really make any sense beyond what I just explained.
324411
Mean distance from\nEarth 149.6×106 km\n(92.95×106 mi)\n(8.31 minutes at the speed of light) \n\n--\nThe Sun is the spectral type G2V yellow star at the center of Earth's solar system. The Earth and other matter (including other planets, asteroids, meteoroids, comets and dust) orbit the Sun. Different latitudes of the Sun rotate at different rates; a point on the equator takes 25 days to complete a rotation, while a point at a pole takes 36 days. The resultant torsion creates the Sun's very strong magnetic field, which in turn drives the 11-year cycle of solar activity. The Sun accounts for more than 99% of the solar system's mass. Energy from the Sun has supported almost all life on Earth through photosynthesis since the appearance of the first organisms. Humans use sunlight for eyesight, warmth, growing crops, and powering solar cells.\n\nThe Sun is a ball of plasma with a diameter of 1.392 million km (864,950 mi) and a mass of about 2.0×1030 kg, which is somewhat greater than that of an average star in the Milky Way galaxy. About 74% of its mass is hydrogen, with 25% helium, and the rest made up of trace quantities of heavier elements. The Sun is about 4.6 billion (109) years old and is about halfway through its main sequence evolution, during which nuclear fusion reactions in its core fuse hydrogen into helium. About 5 million tons of matter are converted into energy within the Sun's core every second, producing neutrinos and solar radiation. In about 5 billion years, the Sun will evolve into a red giant and then a white dwarf, creating a planetary nebula in the process.
842146
Well the earth orbit's the sun \n2AU * PI / year\n\nAn AU is the average distance of the Earth from the sun in it's orbit.  Although all orbit's are ellipses, the equation of a circle should approximate close enough.\n\n1AU =149.598×10^6 km.\n2AU = 299196000 km \n\nThe earth moves really fast so we should convert years into seconds.  The earth orbits the sun once about every 365.25 days (the .25 is why we have leap years).\n\n365.25 * 24 * 60 * 60 = 31557600 seconds.\n\nSo now all we must figure out to get the speed in km/sec we calculate \n(299196000 * PI) / 31557600\n=29.785280109497\n\nSo the Earth orbits the sun at a speed of 29.785280109497 km/sec.  That's pretty fast!\n\nWikipedia gives a max orbital speed of 29.783 km/sec and a min orbital speed of 29.291 km/sec, so my estimate was pretty darn close.
706526
the light takes 8+ minutes to get from the sun to the earth, but it was inside the sun for a long time before it actually made it to the suns surface and began its journey to the earth
675938
The speed that the reflection is moving at is near light speed (186,000 miles a second). The spot we see the reflected light coming from is different as the plane moves across the earth, regardless of how fast or slow the plane is moving.
226867
The speed of light. 186,000 miles per second.
492088
The speed of sound isn't even close to the speed of light. The speed of sound in air is usually given as 343 meters per second at sea level in air and the speed of light is approximately 3 X 10^8 meters per second (300,000,000 m/s)in a vaccuum.
164037
The speed of light is much, much faster than the earth's rotation.
15135
well, i'll answer your questions in reverse order.\n\nneptune's average distance from the sun is about 4.5 billion kilometers, or about 30 times as far out as the earth.  it has a diameter of around 50,000 kilometers, which means it's about 4 times the size of the earth.\n\nas for how long it would take - that entirely depends on what kind of spaceship you used to get there.  if you had a fictional spacecraft that could go nearly the speed of light, it would take around 3 hours.  if you used the same kind of spacecraft that the apollo missions used, you would be traveling around 25,000 MPH.  this is around 40,000 kilometers per hour, so:\n\n4.5 billion kilometers / 40,000 kilometers per hour = 112500 hours = 13 years or so.
42718
speed of light = 299,792,458 m/s\nspeed of sound at sea level = 340.29 m/s\nspeed of electricty = probably around 8.4 cm/hour\n\nBut wait...why is electricity so slow?! Light bulb turns on almost instantly! \nAnswers here: http://www.discoverycentermuseum.org/experiments/272.htm
1178302
Mean distance from earth149.6×10^6 km or (92.95×10^6 mi)\nIt would take about 8.31 minutes at the speed of light to go from earth to sun.
189425
It's about 93 million miles. It takes a sunbeam about eight minutes to reach earth once it leaves the sun. The moon, by contrast, is about 240,000 miles away, but I'm not positive about that exact number. I am positive about the sun, though.
157283
The light speed is about 186000 mile/second (300000 km/second) and the distance between Uranus and the sun is\nabout 2870000000 km ,so the light may take about 159 minutes\nor 2 hr and 39 minutes to reach from the sun to Uranus.\nBut notice that the distance is variable since the planet \nis moving round the sun with variable speed which adds \nanother factors to be calculated but in general the speed\nI calculated above is giving you a sence .