backstaff
- Examples
The problem of getting dazzled by the Sun later led to the invention of the backstaff (pictured below on the left) where the sunlight fell onto a target, not into the eye. | El problema del deslumbramiento por el sol condujo más tarde a la invención de la alidada invertida (dibujada abajo a la izquierda) en la cual la luz del sol caía sobre un objetivo, no sobre el ojo. |
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