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Monochromatic light is normally incident on a diffraction grating.The mth order line is at an angle of diffraction and has width w.A wide single slit is now placed in front of the grating and its width is then slowly reduced.As a result:
Nightmares
Disturbing dreams that can cause feelings of fear, terror, or anxiety, often awakening the sleeper.
Nicotine
The active ingredient in tobacco.
Stimulant
A substance that raises levels of physiological or nervous activity in the body, often used to increase alertness, attention, and energy.
Sleep
A naturally recurring state of mind and body, characterized by altered consciousness, relatively inhibited sensory activity, reduced muscle activity, and inhibition of nearly all voluntary muscles during rapid eye movement (REM) sleep phases.
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