Calculations with Optical Instruments
The more the glass is curved, the smaller is the focal length, the stronger is the magnification of the glass.
M = 25 cm / f
Calculation of focal length and magnification of a magnifying glass. Conversion factor is the near point distance of the eye, which is estimated as 25 cm. This is not the distance of the glass from the object.© Jumk.de Webprojects | German: Berechnungen bei optischen Geräten | Imprint & Privacy