a lamp for providing momentary light to take a photograph | changing location rapidly |
a bright patch of color used for decoration or identification | a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression |
a momentary brightness | a rate (usually rapid) at which something happens |
a sudden brilliant understanding | the ratio of the focal length to the diameter of a (camera) lens system |
a short news announcement concerning some on-going news story | distance travelled per unit time |
a burst of light used to communicate or illuminate | |
a gaudy outward display | |
a sudden intense burst of radiant energy | |
a short vivid experience | |
a very short time (as the time it takes the eye to blink or the heart to beat) | |