Marvin . Edmund by https://padlet.com/marvin_sing/y6qokgis9qh1 en-us 2016-10-10 00:30:56 UTC 2025-11-12 19:36:51 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Xmastree.png What are "Lumens"? https://padlet.com/marvin_sing/y6qokgis9qh1/wish/129377549 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.

source: www.integral-led.com/education/what-are-lumens]]> 2016-10-10 00:35:44 UTC https://padlet.com/marvin_sing/y6qokgis9qh1/wish/129377549 Terms for Light measurment https://padlet.com/marvin_sing/y6qokgis9qh1/wish/129377702 1. Candela
2. Footcandle
3. Lumen
4. Luminance
5. Watt


]]> 2016-10-10 00:37:55 UTC https://padlet.com/marvin_sing/y6qokgis9qh1/wish/129377702 What improvement could be made to your home to light it more efficiently? marvin_sing https://padlet.com/marvin_sing/y6qokgis9qh1/wish/129377943 1. Insulate your home. Adding new or additional insulation to your ceilings, attic and walls along with using caulking or weather stripping.
2. Revamp your windows. Your windows are a major source of heat loss in a home.
3. Replace old appliances. Older appliances are less energy-efficient than newer models. Replace these old clunkers in your home with Energy Star certified appliances.
4. Switch from incandescent to fluorescent. Although compact fluorescent bulbs cost more initially, the end result is considerable savings.
5. Plant a tree. Outside your home, plant deciduous shade trees in your yard on the side of your house that gets the most intense sun during the summer months (usually the side with the western exposure). ]]> 2016-10-10 00:40:31 UTC https://padlet.com/marvin_sing/y6qokgis9qh1/wish/129377943 https://padlet.com/marvin_sing/y6qokgis9qh1/wish/129378149 2016-10-10 00:42:33 UTC https://padlet.com/marvin_sing/y6qokgis9qh1/wish/129378149 Health issues are associated with looking at  LED's lamps? https://padlet.com/marvin_sing/y6qokgis9qh1/wish/129378319 It is now accepted that artificial night-time lighting has various effects on humans and that exposure to optical radiation affects human physiology and behavior, both directly and indirectly]]> 2016-10-10 00:44:37 UTC https://padlet.com/marvin_sing/y6qokgis9qh1/wish/129378319 How can you use light energy from the sun to give light at night? marvin_sing https://padlet.com/marvin_sing/y6qokgis9qh1/wish/129378375 Solar panels]]> 2016-10-10 00:45:11 UTC https://padlet.com/marvin_sing/y6qokgis9qh1/wish/129378375 What was the first source of light that humans made use of? marvin_sing https://padlet.com/marvin_sing/y6qokgis9qh1/wish/129379077 The first lamp was invented made of a shell, hollowed-out rock, or other similar non-flammable object which was filled with a combustible material (probably dried grass or wood), sprinkled with animal fat (the original lighter fluid) and ignited.]]> 2016-10-10 00:54:07 UTC https://padlet.com/marvin_sing/y6qokgis9qh1/wish/129379077 Find out how each of these lamps work and any advantages or disadvantages of each. marvin_sing https://padlet.com/marvin_sing/y6qokgis9qh1/wish/129985779 LED]]> 2016-10-11 22:03:21 UTC https://padlet.com/marvin_sing/y6qokgis9qh1/wish/129985779 Which types give the greatest amount of light for each unit of electrical energy that it uses?(Which is the most efficient or economical?) marvin_sing https://padlet.com/marvin_sing/y6qokgis9qh1/wish/129985900 LEDs produce the highest amount of watts compared to other lights..]]> 2016-10-11 22:04:30 UTC https://padlet.com/marvin_sing/y6qokgis9qh1/wish/129985900