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Related to Flash light:flashlight app The light from a small tray of flash light powder that was used before the introduction ofFlash bulbsto provide illumination for indoor photography. The light came from the burning of magnesium powder. ...
The beam that is ___by a laser differs in several ways from the light that comes out of a flashlight. A. emitted B. transported C. motivated D. translated 相关知识点: 试题来源: 解析 A 正确答案:A解析:动词辨析 emit“发出(光、热、声音等),射出”;motivate “作为…的动机,激励,激发”...
The beam that is( )by a laser differs in several ways from the light that comes out of aflashlight.[单选题] A. emitted B. transported C. motivated D. translated 相关知识点: 试题来源: 解析 A 正确答案:A 答案解析:emit意思是“释放,发出”。译:激光发出的光线和手电筒发出的光线有几个...
flashlight n.手电筒; 手电;In 1666, Sir Isaac Newton showed that when light passes through a prism , it sep a rates into all the othe r colors. 当光通过棱镜时，它会分离为所有其他颜色 This clearly demonstrated that light is composed of many different ...
What can we tell from the “flickering light”? A. It was the flashlight made for rescue by the people inside. B. It signaled that there was a big fire out of control. C. It signaled that the fire inside the house was small. D. There was an E. xplosion near the window that ...
Torch LightUVG3 is a small-sized, lightweight, UV-A LED flashlight designed for quickinspections in “hard-to-reach” spots and where the amount of visible light from the LED is critical. A high quality white light filter1reduces the transmission of white light from the LED and also ...
The termdioderefers to the twin-terminal structure of the light-emitting device. In a flashlight, for example, a wire filament is connected to abatterythrough twoterminals, one (the anode) bearing the negativeelectric chargeand the other (the cathode) bearing the positive charge. In LEDs, as...
Just one joule - about the same amount of energy you get from a flashlight bulb in several seconds of operation - is enough to vaporize a hole through a 1/32-inch-thick sheet of steel if it is transmitted in a concentrated burst of about a millisecond. ...
Avoid looking directly at a flashlight if you can help it. If you’re trying to find something in the dark, try using a flashlight instead of your eyes because it’s brighter. If you need to use a flashlight, look away from the light and down at where you’re going, and don’t lo...