Light bulbs are measured in numerous ways. actual dimensions, quantity of lumination output, wattage usage are merely a few. This article will concentrate for the actual dimensions of lumination bulbs as nicely as the differing sorts of bases. There are 4 methods of measuring a bulbs actual dimensions: 

   1)LED Bulb shape: bulb shapes vary, from pear shapes to funnel shapes to tube shapes. every single carries a designation. good examples include: PAR for parabolic aluminized reflector or T for tube. a whole lot of residence haligen lights really are a MR16, the MR is for 'metalic reflective'.

   2) LED Bulb bottom type: Bases are measured in millimeters. So a common residence screw-in bottom like E27 (E is for Edison Screw-in) is 27 millimeters in diameter. An E11 candelabra bottom can be an 11 millimeter diameter Edison screw in base. For pinned bases like a floresent tube or perhaps a pinned MR16 halogen bulb, the measurement is in the middle of 1 pin towards middle in the other pin.

 

    3)LED Bulb diameter: bulb diameter is measured in 1/8 inches increments in the maximun place of diameter. A PAR30 is 30 eigths of an inch in diameter or three 3/4 inches. A T8 is 8 eights of an inch in diameter or one inch. MR16 is 16 eigths or two inches in diameter. 

    4) Bulb length: bulb duration is measured in inches since the highest all round duration (MOL). So a four foot floresent tube has an MOL of 48 (inches).