How far does light travel in the ocean?

Kasey Pouros asked a question: How far does light travel in the ocean?
Asked By: Kasey Pouros
Date created: Mon, Mar 22, 2021 1:06 PM

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Those who are looking for an answer to the question «How far does light travel in the ocean?» often ask the following questions:

❔ How far does light travel into the ocean?

Home Ocean Facts How far does light travel in the ocean? Light may be detected as far as 1,000 meters down in the ocean , but there is rarely any significant light beyond 200 meters. The ocean is divided into three zones based on depth and light level.

❔ Where does photic light travel in the ocean?

  • The aphotic, or “midnight,” zone exists in depths below 1,000 meters (3,280 feet). Sunlight does not penetrate to these depths and the zone is bathed in darkness. ‘Photic’ is a derivative of ‘photon,’ the word for a particle of light.

❔ How far does blue light travel in the ocean?

Sunlight entering the water may travel about 1,000 meters (3,280 feet) into the ocean under the right conditions, but there is rarely any significant light beyond 200 meters (656 feet. National Ocean Service National Oceanic and Atmospheric Administration U.S. Department of Commerce

10 other answers

How far does light travel in the ocean? Light may be detected as far as 1,000 meters down in the ocean , but there is rarely any significant light beyond 200 meters. The ocean is divided into three zones based on depth and light level.

How far does light travel in the ocean? Light in the ocean decreases with depth, with minimal light penetrating between 200-1,000 meters (656-3,280 feet) and depths below 1,000 meters receiving no light from the surface.

Generally, lightning can travel for 20 feet through water before dissipating. How far the charge travels depends on the intensity of the lightning, topography of the water, salinity and temperature. Lightning does not penetrate deep into water, but the charge disperses in all directions, favoring the surface.

Within the first 10 m, water absorbs more than 50 percent of the visible light energy (Fig. 9.9). Even in clear tropical water only about 1 percent of visible light—mostly in the blue range—penetrates to 100 m. Light attenuation is the gradual decrease in light intensity as it travels through matter.

Once it is within the water, light may be scattered or absorbed by solid particles. Most of the visible light spectrum is absorbed within 10 meters (33 feet) of the water's surface, and almost none penetrates below 150 meters (490 feet) of water depth, even when the water is very clear.

The area in the ocean where sound waves refract up and down is known as the "sound channel." The channeling of sound waves allows sound to travel thousands of miles without the signal losing considerable energy. In fact, hydrophones, or underwater microphones, if placed at the proper depth, can pick up whale songs and manmade noises from many kilometers away.

Don't forget to add in the horizontal distance. If you are 10ft underwater, and you are viewing an object 10ft away, the light has actually travelled 20ft, and all of the reds will be filtered out. Likewise, if you light up an object with your strobes 5ft away, the light has to travel 5ft to the object, and 5ft back to your lens, for a total of 10ft.

The intensity of blue light is reduced by 90 per cent over a distance of 230m, by 99 per cent over 460m, by 99.9 per cent over 690m, and so on.

In empty space, the wave does not dissipate (grow smaller) no matter how far it travels, because the wave is not interacting with anything else. This is why light from distant stars can travel through space for billions of light-years and still reach us on earth. However, light can also travel within some materials, like glass and water.

Marine photosynthesis is confined to the tiny fraction of the ocean where sunlight penetrates—at most, the upper 200 meters. UV light also penetrates into this region, which may have increasingly profound consequences. UV radiation can cause damage to organisms on both land and sea.

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