radiation
	about which colour material is best at emitting/absorbing thermal radiation.
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ABSORB
BEAKER
BLACK
COLOUR
DARK
EMIT
HEAT
HOTWATER
INFRARED
LIGHT
MATERIAL
PARTICLES
RADIATION
REFLECT
SILVER
SURFACE
THERMAL
THERMOMETER
WAVE
WHITE
| M | E | E | D | D | E | R | A | R | F | N | I | S | N | Q | 
| R | Z | E | I | F | N | L | W | X | C | B | C | P | S | T | 
| Y | V | N | Q | V | E | A | D | S | K | E | I | R | S | B | 
| E | C | K | Q | E | T | I | L | F | I | H | E | E | U | O | 
| B | F | B | Y | G | C | R | W | V | S | T | L | B | R | Z | 
| K | J | Y | A | O | E | E | M | A | E | C | I | K | F | K | 
| X | I | R | L | L | L | T | D | M | I | K | G | F | A | T | 
| L | H | O | M | T | F | A | O | T | R | E | H | G | C | N | 
| T | U | O | S | I | E | M | R | A | T | I | T | L | E | J | 
| R | A | I | K | M | R | A | D | I | A | T | I | O | N | R | 
| Y | O | E | I | E | P | U | H | C | K | B | B | F | B | E | 
| I | R | R | H | O | T | W | A | T | E | R | S | W | J | K | 
| Q | J | T | H | E | R | M | A | L | E | I | F | O | S | A | 
| O | W | S | I | L | V | E | R | V | H | T | O | G | R | E | 
| L | V | Q | G | A | K | Y | D | C | E | K | C | A | L | B | 
  
  
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