| Front | lumen |
|---|---|
| Back | واحد اندازه گیری نور the SI unit of luminous flux, equal to the amount of light emitted per second in a unit solid angle of one steradian from a uniform source of one candela. This 18-volt light offers 500 lumens of searing white light for 20 minutes, or you can employ the 250-lumen lamp assembly to extend run time to one hour. |
Learn with these flashcards. Click next, previous, or up to navigate to more flashcards for this subject.
Next card: Confederate هم پیمان joined agreement treaty local groups
Previous card: Accent لهجه تاکید distinctive mode pronunciation language nation
Up to card list: Delta's key to toefl ibt - persian