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Which would be the first to reach Earth if a light signal and a radio signal were emitted from a star?
Wiki User
∙ 13y ago
It would be a tie; both light and radio are electromagnetic waves, as are X-rays, gamma rays, ultra-violet and infrared. They all travel at the same speed, the "speed of light", which is about 300,000 km/second, or 186,000 miles per second.
Wiki User
∙ 13y ago
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Does the sun or earth emit light with higher energy?
Only the sun emits radiation in the wavelengths of visible light, which is considerably higher energy than infrared emitted by Earth.
Why light emitted by bulb is not monochromatic?
Light bulbs aim to emulate the light emitted by the Sun, which radiates as a black body at 6000 degrees C. The light is emitted over the entire visible spectrum. Some bulbs produce monochromatic light, sodium street lights for example.
What is the difference between emitted light and exciting light?
excited light is the light a chemical absorbs raising it from it's ground state to an excited state. Energy is released as heat and as light. Causes flourescence when chemical returns itself to its ground state. emitted light is the light emitted from the absorbing chemical. When this happens a substance(usually an organic) is emitting a light of longer wavelength after absorbing light of a shorter wavelength.
Does Pluto emit or reflect light?
Pluto reflects the light that was emitted from the sun.
What is a stellar spectra?
A stellar spectrum is the light emitted by a star.
The wavelengths of radiation emitted by Earth are?
they are longer than those emitted by the sun.
Is there light coming from any planets?
no light is not emitted by any planet but light ,reflected by many planets comes to the earth
What makes it possible to see the Moon from Earth?
to use ur eyes wow really -.-..... Light emitted by the Sun is reflected to Earth by the Moon's surface.
Does the sun or earth emit light with higher energy?
Only the sun emits radiation in the wavelengths of visible light, which is considerably higher energy than infrared emitted by Earth.
Four of Jupiters satellites can be seen from Earth using a telescope What makes these satellites visible?
light emitted by the satellites
What process when light is emitted in all directions?
Scattering. The location inside the Earth where an earthquake begins is called the focus.
Can the speed of light be used to find the velocity of the earth relative to the rest of the universe ie red or blue shifting of light emitted on earth?
Yes, this is used to make estimates/It is called the Doppler effect
What process occurs when light is emitted in directions?
Scattering. The location inside the Earth where an earthquake begins is called the focus.
What wavelenghts are used to study star's?
To make a long story short, all of them. Various properties of starts can be studied by measuring the frequencies and corresponding intensities of electromagnetic radiation from a star. Assuming a star is not moving with respect to the Earth (or, put more simply, is moving as fast as the Earth is and in the same direction), the intensities of the wavelengths emitted by the star can be seen from Earth as having a bell curve distribution whose peak corresponds with the star's temperature. However, this bell curve distribution is not perfect. At several specific frequencies, the intensity of emitted light is greatly decreased. The frequencies influenced by this effect and the degree that this effect occurs are dependent on the component elements and corresponding concentrations of these elements. Therefore, by analyzing the frequencies that are "missing" from the electromagnetic spectrum, one can derive the chemical composition of the star. If the star is moving with respect to the Earth, this distribution of light is distorted even more. As a consequence of relativistic physics, the wavelengths of light emitted from the star will appear to have a higher frequency as seen from the Earth than what was emitted if the star is moving toward the Earth (this is called "blue shift", as visible colors appear more blue). Conversely, the Earth will see lower frequencies of light than were originally emitted if the star is moving away from the Earth (this is called "red shift", as visible colors appear more red). However, since the distribution of light emitted from the star has "missing" frequencies, and since the original emitted frequencies are known for these "missing" frequencies (as they correspond with the frequencies emitted by known compounds), the entire distribution of light can be shifted back to its rightful place. Moreover, the amount of this shift is dependent of the relative speed between the Earth and the star; therefore, the star's speed can be determined from the star's light as well.
How do astronomers observing distant galaxies talk about looking backward in time?
The speed of light is not infinite. Light takes time to travel from distant galaxies to our eyes here on Earth. If a galaxy is 1 billion light years away, it has taken 1 billion years for the light emitted by said galaxy to reach us here, so (obviously) we are seeing the light emitted 1 billion years ago. In a sense, we are seeing 1 billion years into the past at the light emitted by that galaxy.
What is a form of emitted light?
fluorescence
How do you fix right tail light on 1998 Dodge Caravan that flashes when left turn signal is engaged?
Definitely sounds like an earth problem from your turn indicator. Check your earth wire from the light cluster especially from the turn signal. If necessary splice in a new wire to a good earth point this will stop the tail light flashing.
