Well the answer is in the question.
A light year is the distance it takes light to travel in one year.
If something is a 100 light years away, then it will take light ..........
One famous scientist who investigated light is Isaac Newton. He conducted experiments with prisms to explore the properties of light and developed the theory of colors.
Isaac Newton was the scientist who first discovered that white light is a mixture of a rainbow spectrum of light rays through his experiments with prisms in the 17th century.
The stars from the Big Dipper are approximately 80 light years away from Earth, meaning it takes 80 years for the light from those stars to reach us. This means that the light we see today from the Big Dipper actually left those stars 80 years ago.
The Earth does not emit light, it like the moon reflects light
Sputnik was a small, metallic sphere that appeared as a bright point of light moving across the sky. It was about the size of a beach ball and emitted radio signals that could be detected by radio operators on Earth.
The earth is not going to blow up
That means that the computer has detected a problem with one of the sensors, and after you clear the code (disconnecting the battery) the computer detects the same error again after you run for a while. You need to run a diagnostic code scan to see what the computer has detected.
Light in the visible spectrum
The computer has detected a malfunction. You need to have it checked for codes.
light
It allows a scientist to measure the wavelength of light.
Visible light energy is detected by the eyes. This type of electromagnetic radiation has wavelengths between about 400 to 700 nanometers, which allows it to be detected by the photoreceptor cells in the retina of the eye.
Different instruments are used to detect different wavelengths of light. For example, visible light is detected by the human eye or by cameras. Infrared light is detected by infrared sensors or thermal cameras. X-rays are detected by X-ray detectors, and radio waves are detected by radio telescopes.
Rods.
who are the people contributed in the study of earth science
Sensory receptors are a type of sensory nerve. The sensory receptors that are specialized to respond to light energy are called stimuli.
Heat and light for the earth, to keep us warm, to grow food, and recently to provide electricity for the world.