In 2014, National put out a Meeting in the Dark as part of National Service Project – Operation Earth Action. I thought it was a really neat idea but couldn’t fit it into my schedule that year. When I heard the that 2015 was the International Year of Light I knew I wanted to do a meeting in the dark. This is still one of my favorite meetings and could be adapted to outdoors and social distancing.
We did our normal opening but in the dark with flashlights. Then we talked a little bit about the International Year of Light and what is meant by Light based technology.
Round Robin Center #1 – Light bulbs
Discuss different types of light bulbs. Show examples of different types of light bulbs. Discuss things like colour, cost, lifespan, energy use and disposal.
|Advantage||Inexpensive||Similar light to incandescent||Lasts 10 times longer than incandescent||Longest lasting|
|Disadvantage||94% energy lost as heat||So-so efficiency||Not all are dimmable||Most expensive|
|Cost||$0.75||$3 to $10||$6 to $22||$10 to $42|
Source Toronto Star
Round Robin Center #2 – Craft
Round Robin Center #3 – Light pollution
What is light pollution.
Types of light pollution.
How many stars can we see in the city on a clear night
How many stars can we see in the country side
Light pollution effects other species as well. Birds fly into windows of skyscrapers for example.
How can we stop it? Bad street lighting causes light pollution and wastes money. Dark sky preserves.