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| double prism | |||
| double-image prism; optical square (internally reflecting prism used to turn a beam of light through precisely 90° or 180°) | |||
| biprism | |||
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Doppelprisma : 23 phrases in 4 subjects |
| Health care | 2 |
| Medical appliances | 4 |
| Optics branch of physics | 14 |
| Physics | 3 |