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Most of the time, pigments in you skin, which are dark colored chemical compounds, absorb the UV light. Here, an electron is promoted in a chemical which can absorb this radiation and not be harmed. It releases this energy as heat.
In fair skinned people, this radiation promotes the electrons of proteins, lipids, and sometimes DNA. This can be bad, and can cause cancer, because DNA with promoted electrons is unstable.
Good thing we have the Ozone to protect us from this!
-Melanin production is increased to protect the DNA from this radiation. Melanin is a yellow-brown pigment, which is why the skin becomes darker (eg. tans, freckles) after exposure to UV.
-in moderate levels it stimulates formation of vitamin D
-if excessive UV absorbtion: you get burns
-skin cancer (melanoma) is also a possibility at prolonged exposure, because DNA in cells gets damaged due to UV light
What else can I help you with?
What type of reaction takes place when silver bromide is exposed to sunlight?
Photodecomposition reaction occurs when silver bromide is exposed to sunlight. The sunlight causes the silver bromide to decompose into silver and bromine atoms, leading to a color change from white to grey or black.
How do you store silver nitrate?
Silver nitrate should be stored in a cool, dry place away from light and heat sources, as it is light-sensitive and can decompose when exposed to light. It should be kept in a tightly sealed container to prevent absorption of moisture from the air. Additionally, it is important to label the container clearly with appropriate warnings and information.
What are 3 clues that a chemical change may be taking place?
changes color, fizzing, foaming, or the production of heat, light, sound or odor.
Is it true or false that indications of a chemical change include light heat and gas production?
True. Light, heat, and gas production are indications of a chemical change. These signs suggest that a chemical reaction is taking place, which involves the formation of new substances with different properties than the original substances.
When paper turn yellow brown upon exposure to sun light what type of change is likely taking place?
The paper is likely undergoing a chemical change called photodegradation, where the molecules in the paper are breaking down due to the energy from sunlight. This can cause the paper to change color and become brittle over time.
What energy conversion takes place in a tube light?
In a tube light, electrical energy is converted into light energy. The electricity runs through the tube and excites the gases inside, causing them to emit ultraviolet light. This ultraviolet light then strikes the phosphor coating on the inside of the tube, producing visible light.
What happens to LSD when exposed to light?
LSD is sensitive to light and can degrade when exposed to it. Light can break down the chemical structure of LSD, causing it to lose its potency and effectiveness. It is best to store LSD in a cool, dark place to preserve its quality.
Is film ruined if exposed to light?
Yes, film can be ruined if exposed to light for an extended period of time. Light can cause the film to become overexposed, resulting in a loss of image quality and detail. It is important to store film in a dark and cool place to prevent damage from light exposure.
Does a physical or chemical change take place when an apple is exposed to oxygen over time with peroxide on it?
chemical
What chemical change takes place when steel is exposed to water?
Corrosion occur if oxygen exist also.
Why nitroglycerin keep in dark place?
Nitroglycerin is light-sensitive and can become unstable when exposed to light, which can lead to decomposition and the release of toxic gases such as nitrogen dioxide. Storing nitroglycerin in a dark place helps to minimize its exposure to light and maintain its stability.
How can I change a recessed light to a pendant light?
To change a recessed light to a pendant light, you will need to remove the recessed light fixture, install a pendant light fixture in its place, and connect the wiring according to the pendant light's instructions.
How do you change the fog light on a Nissan Frontier?
To change the fog light on a Nissan Frontier you will need to remove the screws which hold the light assembly in place. These screws may be located under the hood or off to the side of the light on the front of the vehicle. Unclip the plastic relay holding the light in place. Clip the plastic relay into the new fog light and reposition the light in place. Secure the light assembly in with the screws.
How do you turn off oil change light on 2001 camaro?
Warning lights come on when there is an issue. A Oil change light with turn off when an oil change has taken place.
How do you change the lincen place bulb on a Lexus GS300 year 1999?
How do you change the lincen place light bulb on a Lexus gs300 year 1999
How do you change light bulb on viking sewing machine?
have old light out of machine but can't get new blub in place
Did a chemical change take place in a light bulb?
Possible oxidation of the metallic filament with traces of oxygen existing in the light bulb.
