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There are 84 clues with the answer 'PHOTON'
# CLUE
1.
Physicist initially well-informed about light particle
2.
A massless particle which moves at the speed of light in vacuum; it exhibits properties of both waves and particles
3.
___ torpedo: "Star Trek" weapon
4.
Light-intensity measure
5.
Quantum of visible light
6.
X-ray particle
7.
Kind of torpedo in "Star Trek"
8.
Quantum optics particle
9.
Quantum of light energy (6)
10.
In physics, the smallest quantum of energy in which light is emitted (6)
11.
Particle of light energy (6)
12.
A quantum of light or other electromagnetic radiation (6)
13.
A tiny amount of light still at start of November (6)
14.
Name on picture provides some illumination (6)
15.
Do not hop around light unit (6)
16.
A quantum of electromagnetic radiation (6)
17.
Particular stuff (6)
18.
Particle? Oh, just point one out (6)
19.
Some light energy
20.
Quantum of electromagnetic radiation (6)
21.
Light energy article
22.
A quantum of radiant energy (6)
23.
... on hard top around quantum of energy
24.
Light particle will snap over any number (6)
25.
Kind of "Star Trek" torpedo
26.
Something scientists make light of?
27.
Snap at the end of autumn a unit of retinal illumination (6)
28.
Light particle is still radiation in the end (6)
29.
Light particle is still radiation in the end
30.
Particle that can be emitted or absorbed by an atom