Your question is too vague to be answered. The word "risk" is invoked when there is some objective that is to be accomplished. Is your objective the perception of light by human eyes, the detection of distant galaxies, the successful developing of photographic film, etc?
Visible light waves are beneficial for the human race, in that they make it possible for usto see stuff as we go through daily life, helping us immeasurably to avoid the dangerousand embarrassing risks of bumping into things, falling over things, stepping in stuff, andgenerally stumbling around blindly. In modern times, these waves are also utilized in thetraffic signals at major intersections, which are responsible for keeping vehicular trafficflowing smoothly and with equanimity.
The only part of the electromagnetic spectrum that we can see is the small yet significant part of visible light. Visible light is not harmful for humans, but some of the other types of waves are.
Sunlight is actually light waves of different frequencies. Some of these waves are part of the visible light spectrum (ROYGBIV), and therefore sunlight appears white, a combination of all the frequencies in the visible light spectrum. Light waves with lower frequencies appear more red or orange. Light waves with higher frequencies appear violet or blue. When sunlight shines down through the atmosphere, the particles in the air scatter the light waves of higher frequencies, therefore spreading the waves in different directions in the sky (This is why the sky appears blue). The lower frequency waves reach our eyes mostly undisturbed. Since sunlight has light frequencies dominant in yellow, that's the color we see.
Light is both Visible, and Invisible. It depends on what frequency of light it is, and also what Species you are. For example, we Humans can't see ultra violet light but some animals, like Snakes, can see it.
No. The radio waves has got the lowest frequency, light waves has got in between frequency and the X-rays has got the highest frequency of the three types of waves.No.
radio waves, microwaves, visible light, and x-rays
radio waves, microwaves, visible light, and x-rays
for wavelength, the longer of the two is visible light, but the longest type of rays are radio waves (some of them have a wavelength as long as a football field)
radio waves
Visible light because some of the energy that reaches the earth from the sun is visible light. The visible light from the sun is white light. White light is visible light of all wavelengths combined. Light from lamps in your home as well as from the fluorescent bulbs in your school is also white light.
See the related question. The Infrared black body radiation is emitted by the Earth.
Visible light, gamma rays, x rays, radio waves, microwaves
Visible light waves are electromagnetic waves, within a certain range of frequencies. The wavelength of visible light is between about 400 and 700 nm. Some of the characteristics of electromagnetic waves include:* Carried by particles called photons* The wave is a wave in the electric and magnetic fields* In a vacuum, this wave (and the photons) propagates at the so-called speed of light, which is about 300 million meters/second.
Visible light waves are beneficial for the human race, in that they make it possible for usto see stuff as we go through daily life, helping us immeasurably to avoid the dangerousand embarrassing risks of bumping into things, falling over things, stepping in stuff, andgenerally stumbling around blindly. In modern times, these waves are also utilized in thetraffic signals at major intersections, which are responsible for keeping vehicular trafficflowing smoothly and with equanimity.
The only part of the electromagnetic spectrum that we can see is the small yet significant part of visible light. Visible light is not harmful for humans, but some of the other types of waves are.
Visible light waves are electromagnetic waves, within a certain range of frequencies. The wavelength of visible light is between about 400 and 700 nm. Some of the characteristics of electromagnetic waves include:* Carried by particles called photons* The wave is a wave in the electric and magnetic fields* In a vacuum, this wave (and the photons) propagates at the so-called speed of light, which is about 300 million meters/second.
I have no video but electromagnetic wave may harm and may notIt is divided to seven the radio waves,microwave,infrared,visible light,ultraviolet light,X-rays,and lastly Gamma rays. The waves that is not harmful is from radio wave to visible light then the rest may harm