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How does different light affects things?
Visible light consists of a number of wavelengths. Blue light is the most energetic, red light the least energetic. Green plants grow best in red or blue light (sunlight is a mixture of wavelengths) and do not grow in green or yellow light. Light intensity will affect the growth of plants. Laser light (high intensity with very narrow wavelength) can be used to cut and obviously hurt if used incorrectly. Some people are photo sensitive and light can cause them pain. Green plants are photo sensitive and will grow towards the light.
What colour is the best absorber of heat and why?
Matte black because it absorbs most wavelengths.
Which colours are the best emitters?
Colors with shorter wavelengths, such as violet and blue, are generally better emitters of light. This is due to the relationship between color and energy in the electromagnetic spectrum. Shorter wavelengths correspond to higher energy photons. Therefore, materials that emit violet or blue light often have higher energy levels, making them effective emitters. Keep in mind that specific materials and conditions can influence emission properties, so this is a generalization.
Which wave diffracts the most when encountering an obstacle?
Firstly, diffraction refers to what happens to a range of wavelengths. It means the different wavelengths are spread out, producing a spectrum under the right circumstances. Secondly, the 'obstacle' has to be transparent, so the waves pass from one medium to another. More properly, light hits the boundary between two transparent media (e.g. air and glass), and it is refracted(bent) as it enters the glass block. Shorter wavelengths are refracted more, so the beam is spread out, or diffracted. The easy way to remember this is 'blue bends best'.
Which is the best absorber of inferared radiation heat a dull surface or a shiny one?
A dull surface will absorb infrared best, but it needs to be dull at infrared wavelengths. Do not judge the infrared behavior by the visible performance.
What wavelengths of light does chorophyll a absorb best?
430 nm and 662nm. novanet
Which parts of the spectrum does chlorophyll a asborb best?
Red
Is red best for plant growth?
Red or blue light are the wavelengths of the visible light spectrum that are most absorbed by plants.
What chlorophyll a and b absorb?
Chlorophyll a and b absorb BLUE-VIOLET and RED wavelengths of light best.
Do plants grow taller in green light or white light?
All the colours of the rainbow have different wavelengths. For example, violet has short wavelengths, while red has long wavelengths. Visible light appears as white light because it is a mixture of all the colours. Also, chlorophyll is the principal pigment involved in photosynthesis. Chlorophyll absorbs all the different coloured wavelengths, but leaves green as the colour it reflects and as the colour we see.Therefore, white light is best to grow plants under because green light doesn't do much of anything for photosynthesis.
What is the relationship between light wavelength and photosynthetic rate?
Some light wavelengths improve the rate of photosynthesis. The best colors for photosynthesis are blue and red while yellow is the worst.
Which best describes visible light in relation to other forms of electromagnetic radiation?
Visible light is a small region of the electromagnetic spectrum that is characterized by a specific range of wavelengths and frequencies
What wavelength of light does chlorophyll a reflect?
There are 2 different types of chlorophyll. Chlorophyll "a" absorbs light in the violet and red regions of the visible spectrum while chlorophyll "b" absorbs light in the blue and red regions of the visible spectrum.
What color reflects heat best for an outside umbrella?
White light is made up of all the different colors of light, as can be seen when it is separated into these various wavelengths using a prism. The colors that we see are the wavelengths of light that are being reflected off of the objects we are looking at. Objects that are red will reflect only red wavelengths and will absorb the other wavelengths; objects that are blue will reflect only blue wavelengths and will absorb the other wavelengths; etc. Black objects absorb all visible wavelengths of light, which is why black asphalt gets so hot in the sunlight. White objects reflect all wavelengths of light. Therefore, a white umbrella would reflect the largest amount of light. However, this does not necessarily imply that it would be the best color to use for an umbrella because what really matters is how much light is transmitted through the umbrella to reach the shade below. The more light that gets through, the less effective the umbrella is in providing you with shade. Therefore, what really matters is how opaque the umbrella is, rather than what color the umbrella is. The opaqueness will be more characteristic of what material the umbrella is made of than what color it is. The fraction of the light that is transmitted will equal all the light that strikes the umbrella that is neither reflected nor absorbed. Thus, it is best to find an umbrella which combines high reflectivity with high opaqueness (generally a thick material) in order to keep the umbrella from heating up and stop the greatest percentage of the sun's rays from reaching you.
How does a colored leaf make food?
The chloroplasts, containing the pigment chlorophyll, make food for the whole plant by the process of photosynthesis. Chlorophyll absorbs blue and red wavelengths of light best, but totally reflects green wavelengths, thus it is colored green.
How does different light affects things?
Visible light consists of a number of wavelengths. Blue light is the most energetic, red light the least energetic. Green plants grow best in red or blue light (sunlight is a mixture of wavelengths) and do not grow in green or yellow light. Light intensity will affect the growth of plants. Laser light (high intensity with very narrow wavelength) can be used to cut and obviously hurt if used incorrectly. Some people are photo sensitive and light can cause them pain. Green plants are photo sensitive and will grow towards the light.
Why do plants respond more to this type of light?
because some wavelengths are more simliar to the ones the sun emits and natural light is best for growing plants in which case the more similar they are to the sun's wavelengths they are, the better it is for the plants.
