How much energy can a plant absorb in ultraviolet light

[nibbel11]

i want to know how much energy does a plant absorb in ultraviolet light, but i have no idea how i am going to do that.

 

[davenn]

your Q is very vague

how much before it shrivels up and dies ?tells us more about what you are trying to achieve

 

[Eucliddo]

Changes in the color of the leaf can tell you if it receives too much or too less light.

 

[davenn]

Changes in the color of the leaf can tell you if it receives too much or too less light.

the OP was referring specifically to UV light

 

[nibbel11]

well i want to know how much energy this plant the "Drosera falconeri" can absorb from light in a specific time in the best circumstances. i thought that uv was the light with the most energy

 

[davenn]

well i want to know how much energy this plant the "Drosera falconeri" can absorb from light in a specific time in the best circumstances. i thought that uv was the light with the most energy

yes, but not necessarily the wavelength that is best absorbed

 

[nibbel11]

so what is, and is there some kind of formula to calculate the energy absorbed in a specific time at a specific area and a wave land

 

[Eucliddo]

There are some device you can use with measuring energy, but... I'm not sure with how you use it in measuring the energy absorption in plants..

 

[256bits]

Hi nibbler11,

The absorption of a plant would depend upon which photosynthetic chemicals are present.
From
http://hyperphysics.phy-astr.gsu.edu/hbase/Biology/ligabs.html

It is evident from these absorption and output plots that only the red and blue ends of the visible part of the electromagnetic spectrum are used by plants in photosynthesis. The reflection and transmission of the middle of the spectrum gives the leaves their green visual color.

Is that the only pigments in leaves, or plants.? Worth an investigation.

I found that graph by searching for the "photsynthesis and wavelength" in Bing.
Many more sites of relevance pop up.

 

[jim mcnamara]

For angiosperms with chlorophyll a and chlorophyll b present:
the action spectra on the first page of the link show several peaks. The two diagrams are for extracted chlorophyll versus protein bound chlorophyll.
http://plantsinaction.science.uq.ed...-absorption-and-photosynthetic-action-spectra

PS: @davenn is correct - long term UV exposure damages plants, people, and most living things.