Multispectral refers to:
A. UV, IR, and visible light
B. the many colors in visible light
C. UV, IR, and x-rays
Thanks!
Well, here is an example in which I suspect your text defined. Check that. In general, A or C could be defined, and even B. The original Landsat mapped in Multi-spectral, it used ten wavelengths in Answer A. http://www.classzone.com/books/earth_science/terc/content/investigations/esu101/esu101page07.cfm is an example of near IR and visible.
So which does your text use? Check it. I have never understood instructors that define a general term to mean something very specific. In the real world, Multi-spectral could mean just about anything (Even your TV, RGB is multispectral).
Our text does not even refer to multispectral.
The term "multispectral" refers to the sensing or imaging of multiple discrete bands or ranges of electromagnetic radiation. These bands can include ultraviolet (UV), infrared (IR), visible light, and other regions of the electromagnetic spectrum. Based on the given options, the correct answer would be:
A. UV, IR, and visible light.
To understand this, consider the different regions of the electromagnetic spectrum. UV radiation has a shorter wavelength than visible light and is not visible to the human eye. IR radiation has a longer wavelength than visible light and is also not visible to the human eye. Visible light, on the other hand, is the portion of the electromagnetic spectrum that is visible to the human eye and consists of different colors.
Therefore, multispectral imaging or sensing involves capturing or analyzing data from various bands within UV, IR, and visible light to provide a more comprehensive and detailed understanding of the subject being observed.