Description

Product details

A typical magnifying glass might have a focal length of 25 cm, corresponding to an optical power of 4 dioptres. Such a magnifier would be sold as a "2×" magnifier. In actual use, an observer with "typical" eyes would obtain a magnifying power between 1 and 2, depending on where lens is held.

Keywords

• lens
• 25 cm
• observer
• actual use
• 4 dioptres
• focal length
• typical" eyes
• optical power
• 2×" magnifier
• magnifying power
• Eye Glass Magnifier
• typical magnifying glass