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How long is the imaginary piece of string in my hand? Bearing in mind it is either longer or shorter depending on the time of year.
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Your deck is currently atan(3/10) = 17 degrees below your roofline. If you lowered it 50cm it would be atan(3.5/10) = 19 degrees below your roofline.
Assuming in the middle of summer the sun moves vertically (360/24) = 15 degrees per hour, or 4 minutes per degree. (19-17) * 4= 8 minutes.
Someone will be along shortly to tell me how I fucked up my maths.
aglet
Constable_Savage
grams
@lemonade
A physics (I think) question... No idea how to work this one out.
I have a raised decking area in my (very sloped) garden, that gets the sun in summer until about half an hour before sunset. Which is to say, the sun 'sets' behind my roof about half an hour before it sets behind a much further away hill to the West.
The deck is about ten metres away from my house and three metres lower than the roofline. It is pretty much directly due East of the house.
The deck is also rotten and needs replacing - and it's a little too high up to sit neatly in the garden.
If I lowered the decking by, say 50cm or 100cm, how much sooner would I lose the sunshine on a summer evening?