Mini Pecan Pie Muffins. Iâm sharing another tried-and-true recipe from my cookbook. I love these mini muffins because theyâre delicious, easy to make (you donât even need a mixer), they freeze well, and theyâre done in 20 minutes! I brought these to school today to share in the teacherâs lunch room and they disappeared.
Example: Calculate Streetlight Watt of following Street Light Area, 1  Required Illumination Level for Street Light (L) is 6 Lux per Square Meter. 2  Luminous efficacy (En) is 20 Lumen per Watt. 3  Required Street Light Area to be illuminated (A) is 1 Square Meter.
Today, lumens are the gauge for brightness. Lumens: The amount of light you get from a bulb â in other words, its brightness. For instance, you need a total of 1,000-3,000 lumens to properly light a 250-ft. living room. This chart from the Lighting Research Center shows how many lumens you need for particular tasks. If youâre older or your eyes are weak, youâll want to increase the lumens.