Why are PAR (Photosynthetic active radiation) and Human vision different?

Q: What principal advantage does an electron microscope have over an optical microscope?

A: Given: electron microscope , optical microscope

Q: We usually associate fluorescence with ultraviolet light— objects glow under “black light.” But it’s…

A: We usually associate fluorescence with ultraviolet light objects glow under "black light" But it's…

Q: Why can't we see stars in day time?

A: The Earth we live is a unique planet for human to survive. It contains atmosphere with the suitable…

Q: You are looking at 2 heated metal pieces. One looks red and the other looks green. Which one is…

A: For the visible spectrum frequency of different colors of light in increasing order is given by Red…

Q: What is the wavelength, in nm, of a light wave with a frequency of 4 * 10^15 Hz?

A: Given that the frequency of the light wave is f=4×1015 Hz. The wavelength of the light can be…

Q: Our sun's blackbody temperature is about 6000 K and its peak radiation occurs at a wavelength of…

A: We can apply Wien's law.

Q: What is meant by the term "coherent light" and how is it achieved?

A: Coherent light    Coherent sources of light  or coherent light are those sources which emit a light…

Q: To separate the two wavelengths of 5000 and 5001 angstroms, we use a Fabry Pro. Suggest the…

A:

Q: follow the pathway of an electron in the x‐ray tube through to the film plate and explain how an…

A: The extremely high temperature within the filament causes negatively charged elections to be…

Q: A ray of light...

A: Given Angle of incidence is given as θ=50° Refractive index of air is n=1 Refractive index of water…

Q: Roscoe Parrish has a vertical leap of 1.2 m. a. What must Roscoe's takeoff velocity be to reach this…

A:

Q: Does something so small matter? What is the difference in the force experienced by the dancer (50…

A:

Q: What is the Functional Equivalence Hypothesis?  Use image scaling as an example

A: Given, Functional Equivalence Hypothesis

Q: What is post treatment in 3D printing technology?

A: To answer: What is post-treatment in 3D printing technology?