Calculations with Optical Instruments
Calculations with Various Optical Instruments
Focal Length of a Lense
The focal length f is the distance of a lense (or mirror) to the point where a light source, which is shining through the instrument, is focussed most.
The value of magnification refers to the length, the magnification of a surface area is this value squared (when doubling a surface in each direction, its area gets quadrupled).
Matching websites: Angular Diameter, Photographic Exposure, Convert Length Units, Lens as Geometric Solid© Jumk.de Webprojects | Online Calculators | German: Berechnungen bei optischen Geräten | Imprint & Privacy