As of January 27, 2013, Parcel Select was split into Parcel Select, for online purchasing, and Standard Post for purchasing at the Post Office. Parcel Select is significantly cheaper than Standard Post. Parcel Select ships at the same speed as First Class mail.
Wiktionary (0.00 / 0 votes) Rate this definition: dosimeter (Noun). A device used to measure a dose of ionising radiation. These normally take the form of either Optically Stimulated Luminescence (OSL), photographic film, thermoluminescent devices (TLD) or electronic personal dosimeters (PDM).
A unit of luminance equal to 1candela/cmÂ². T Number of a Lamp. The lamp T number is the diameter of the lamp in increments of 1/8 inch. A T-1 lamp is 1/8 inch in diameter, a T-2 lamp is 1/4 inch in diameter, etc. Talbot photometric measurement. The SI unit of the quantity of light expressed in lumen-seconds.