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LED is short for this emitting diode |
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$800 |
J |
SCIENCE ABBREV. |
2020-11-20 |
#8285 |
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By definition, bioluminescence is the production of this by living organisms |
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$200 |
J |
GENERAL SCIENCE |
2014-09-26 |
#6905 |
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The lumen, a unit of this, is the amount emitted from a source one candela strong |
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$400 |
DJ |
SCIENCE GLOSSARY |
2008-11-17 |
#5566 |
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It's what the "L" stands for in "laser" |
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$200 |
J |
SCIENCE |
2008-07-08 |
#5502 |
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When hit by electrons, a phosphor gives off electromagnetic energy in this form |
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$800 |
DJ |
GENERAL SCIENCE |
2004-10-22 |
#4630 |
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2001:Researchers produce pulses of this that last 650 billionths of a billionth of a second |
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$600 |
J |
SCIENCE OF THE TIMES |
2003-05-30 |
#4330 |
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It's what the "L" stands for in laser |
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$100 |
J |
SCIENCE |
2001-11-20 |
#3962 |
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Silver iodide & silver bromide are sensitive to this, hence their use in photography |
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$200 |
DJ |
SCIENCE |
2001-04-04 |
#3828 |
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Riboflavin deficiency can cause photophobia, abnormal sensitivity to this |
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$200 |
J |
GENERAL SCIENCE |
1996-03-28 |
#2674 |
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When exposed to ultraviolet radiation, a phosphoric substance will emit this |
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$100 |
J |
GENERAL SCIENCE |
1994-01-13 |
#2159 |
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In fireflies the chemical luciferase acts on luciferin to produce this |
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$200 |
DJ |
SCIENCE |
1993-02-19 |
#1955 |
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It naturally travels in a straight line & travels at the fastest speed of anything we know |
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$200 |
DJ |
PHYSICAL SCIENCE |
1991-06-03 |
#1571 |
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Bioluminescence is the emission of this from living organisms |
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$100 |
J |
SCIENCE |
1987-02-02 |
#561 |
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Galileo attempted to measure its speed by having men with lanterns on hills flash each other |
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$200 |
DJ |
SCIENCE |
1985-10-10 |
#284 |
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"Diffraction" refers to the way it bends |
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$400 |
DJ |
SCIENCE |
1984-12-11 |
#67 |