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I don't know the source of your "bright light". If it's sunlight, which of course has some UV in it, or if you take the extract into a dark room and shine a "black light" on it, you will see fluorescence. The source of the red color is chlorophyll. When in place in the leaf, the electrons of chlorophyll absorb solar energy. These excited electrons then fall into an electron transport chain that will strip them of the added energy, using that energy to form ATP and NADPH. The red color you see when you illuminate chlorophyll in a spinach extract with UV is the fall of those "excited state electrons" back into their "ground state". In falling, they shed their energy in the form of red light.

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What is the Response of eye to bright light?

The iris controls the amount of light entering the eyes through pupil. When the surrounding is extremely bright, the iris contracts the size of pupil. This decreases the amount of light entering the eye. This is why when we are suddenly exposed to bright light, the eyes blink and in meanwhile, the iris contracts.


How do you extract chlorophyll from spinach?

Materials: a leaf, a 100 mL beaker, 10 mL ethanol, a hot plate, a power outlet to plug the hot plate into, a Petri dish, goggles, supervision (if you're a kid) Suppose you're working with a spinach leaf. Put it into a 100 mL beaker. Add 10 mL of ethanol to it. Place the beaker with ethanol on a hot plate and set the heat to 2 or 3. Do not crush the leaf or boil the ethanol, which will turn green as chlorophyll gets extracted. Turn off the heat when the ethanol is nicely green. Let the solution cool, put the leaf in a Petri dish or discard it, and pour the chlorophyll extract someplace where you can observe it better. That's the extracted chlorophyll! You can use this method with any leaf, really. Spinach was just an example.


What are rods and cones responsible for?

Rods are responsible for detecting low light and are important for night vision, while cones are responsible for detecting color and detail in bright light. Both rods and cones are types of photoreceptor cells in the retina of the eye.


Does human blood turn black upon death?

No, human blood does not turn black upon death. Instead, after death, blood may settle in the lower parts of the body due to gravity, leading to discoloration and a darker appearance in some areas, but it does not turn completely black.


What does spinach do for vision and eye health?

Spinach is high in antioxidants like lutein and zeaxanthin, which have been shown to help protect the eyes from cataracts and age-related macular degeneration. These nutrients may also improve vision and promote overall eye health.

Related Questions

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A catchy slogan for turning off the lights is "Be bright, turn off the light".


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You might try to see if your bright (brake or turn) part of your tail light is burnt out. This is probably the case if when you turn your turn signal on in one direction, it flashes alot faster than normal.


When was Turn on the Bright Lights created?

Turn on the Bright Lights was created in 2001-11.


What happens if your egg says too bright in fantage?

Then you turn down the light setting down to a lower Setting then what it was. Ok


Where is the bright light switch on your 1979 Chevy truck?

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When does pupil contract?

The pupil contracts in response to bright light to limit the amount of light entering the eye. It dilates in low light conditions to allow more light to enter the eye for improved vision. This process is controlled by the iris muscle.