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What part of the electromagnetic spectrum can the human eye detect?
VIsual light
What is the difference between a laser pointer and an infrared laser pointer?
An infrared pointer uses light that is mainly in the infrared spectrum, and so is mostly invisible to humans. A laser pointer in general refers to any device using a beam of light to mark an object. Both use the same basic technology. The only difference is the wave length. IR lasers are outside of the visual spectrum where as standard laser pointers are within the visual spectrum.
What is main difference between prism spectrum and grating spectrum?
Prism spectrum is formed due to DISPERSION but grating spectrum is formed due to DIFFRACTION. In prism spectrum we have only one order but in grating spectrum we can have second order too IN prism spectrum we have continuous spectrum but in gratings we have only line spectrum In prism spectrum red end will be closer to the direct ray but in grating spectrum violet end will be closer to the direct ray
Which type of spectrum is associated with the radiation of most stars?
absorption spectrum
What human organ is sensitive to a small portion of the electromagnetic spectrum?
VIsual light
Where do the eight colors of the rainbow come from?
The Visual Spectrum!
What part of the electromagnetic spectrum can the human eye detect?
VIsual light
What is the colour of day time?
Daylight is strongest in the blue spectrum, but contains waves from the entire visual spectrum, plus infrared and ultraviolet.
Colors of light in the visual spectrum?
red orange yellow green blue indigo violet
What is detected by the eyes?
The eye detects visual light, which is a quite narrow spectrum of electromagnetic wavelengths.
Can you use a periscope in dark?
Yes - in addition to the standard visual frequency spectrum, periscopes also have thermal and IR capabilities.
What is the visual light spectrome?
The visual light spectrum is all the colors visible by the human eye. The most commonly used definition are the colors of the rainbow: Red, Orange, Yellow, Green, Blue, Indigo and Violet.
What is the difference between a laser pointer and an infrared laser pointer?
An infrared pointer uses light that is mainly in the infrared spectrum, and so is mostly invisible to humans. A laser pointer in general refers to any device using a beam of light to mark an object. Both use the same basic technology. The only difference is the wave length. IR lasers are outside of the visual spectrum where as standard laser pointers are within the visual spectrum.
What particular wavelengths of light produce bands in the spectrum?
The visual spectrum (what you can see; what people in general can see) of light on the Earth is from around (violet) 390 to about (red) 700, as measured in nanometers. A nanometer is 10-9 meter (very small).
Why do you see only a small part of light?
Because our eyes have developed to see the visual spectrum, we need special equipment to see infrared or ultraviolet.
What are spectrums of light?
Light is a range of frequencies of electromagnetic radiation. This is the same stuff that makes radio frequencies, X-rays, microwaves (like the ones used to heat food). The range or group of frequencies that make up visible light plus ultraviolet and infrared light are referred to the visual spectrum. The others are the radio spectrum, the microwave spectrum, etc.
Does colored lights affect plants growth?
Yes. Plants mainly absorb light in the red and blue spectrum, and reflect the green spectrum (which is why leaves look green). The leaves and stems of a plant are green -- they are reflecting, not absorbing, green light. The colors that give the plant the most energy are at the purple end of the spectrum (red and blue) - those colors with the highest light energy. Blue light - responsible for vegetative or leaf growth (fluorescent light) Red plus Blue light - encourages flowering (full spectrum or "grow lights)
