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| Letters | Answer | Clue | ||
| 99% | 4 | Exact Match! | ||
noun • Austrian physicist and philosopher who introduced the Mach number and who founded logical positivism (1838-1916) | ||||
| 30% | 8 | A fictional superhero with sonic speed | ||
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| 22% | 7 | Expressed as amount of energy per unit area per unit time per unit frequency | ||
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Sonic Speed Unit
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Clue Last Found In...
| Source | #Number | Answer |
|---|---|---|
| New York Times04 Nov 1976 | Across 1 | |
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Similar Clues
| Clue | Source | |
|---|---|---|
1 | A fictional superhero with sonic speed | |
2 | Sonic and economic
New York Times -
09 Feb 1976 | New York Times / 09 Feb 1976 |
3 | Sonic feedback
New York Times -
16 Mar 1982 | New York Times / 16 Mar 1982 |
4 | Sonic noises
New York Times -
09 Jul 1991 | New York Times / 09 Jul 1991 |
5 | Sonic welter
New York Times -
31 Aug 1976 | New York Times / 31 Aug 1976 |
6 | Unit of speed commonly used to measure car speed | |
7 | Where water speed records were set - not sonic, however
The Guardian Cryptic -
20 Mar 2006 | The Guardian Cryptic / 20 Mar 2006 |