Nevertheless, women were still a distinct minority of the 435 House Members; at their peak during this period, nine served in the 71st Congress (1929â1931). They lacked the power to focus congressional attention on the issues that were important to them.
NVG â Night Vision Green (495 nm): NVG LEDs, along with red LEDs, are useful for preserving night vision. NVG colored LEDs are useful for military pilots as well, who have special equipment that is designed to work with NVG lights. Blue LEDs are often used for map reading at night.
LED Flashlights â Most flashlights today are LED Flashlights, meaning they use LED bulbs in place of the old incandescent bulbs. LED bulbs are cheaper and more reliable! Most LED flashlights use one of the following Cree LED bulbs: 1  XM-L (T6)/(U2), the bulb used in most LED flashlights, with a maximum output around 700 lumens. 2  XR-E (R2), with around 300 lumen count. 3  XP-E (R2), with around 300 lumen count, but larger than the XR-E.