CONCAVE
CONVEX
FREQUENCY
INPHASE
LENSES
LONGITUDINAL
NORMAL
OUTOFPHASE
REFLECTION
REFRACTION
SUPERPOSITION
TOTALINTERNAL
TRANSVERSE
VELOCITY
WAVELANGTH
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Try to find all 15 words on this board.
| U | D | M | R | V | G | D | B | I | C | O | M | O | N | G |
| M | Y | T | I | C | O | L | E | V | F | M | Y | U | S | K |
| E | S | A | H | P | F | O | T | U | O | K | Q | U | L | W |
| H | U | W | A | C | E | F | H | I | W | S | P | O | A | D |
| A | M | J | G | B | S | Z | I | Z | E | E | N | V | N | G |
| N | O | I | T | C | A | R | F | E | R | G | E | N | R | L |
| X | Z | R | O | Z | H | H | J | P | I | L | E | O | E | C |
| W | Q | V | B | Q | P | V | O | T | A | V | Y | I | T | U |
| Q | L | Y | W | E | N | S | U | N | A | Y | D | T | N | B |
| D | A | J | X | I | I | D | G | C | Q | F | V | C | I | E |
| A | M | K | J | T | I | T | N | S | E | S | N | E | L | N |
| Z | R | Z | I | N | H | O | L | N | T | Q | D | L | A | T |
| X | O | O | A | Y | C | N | E | U | Q | E | R | F | T | B |
| J | N | L | O | N | F | X | E | V | N | O | C | E | O | O |
| P | Y | Q | F | E | S | R | E | V | S | N | A | R | T | K |
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