Technology

60098 readers

2755 users here now

This is a most excellent place for technology news and articles.

Our Rules

Follow the lemmy.world rules.
Only tech related content.
Be excellent to each another!
Mod approved content bots can post up to 10 articles per day.
Threads asking for personal tech support may be deleted.
Politics threads may be removed.
No memes allowed as posts, OK to post as comments.
Only approved bots from the list below, to ask if your bot can be added please contact us.
Check for duplicates before posting, duplicates may be removed

Approved Bots

founded 2 years ago

MODERATORS

162

Startup Says It'll Use Huge Space Mirror to Sell Sunlight During Nighttime (futurism.com)

submitted 3 months ago by return2ozma to c/technology

74 comments fedilink hide all child comments

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 5 points 3 months ago (2 children)

Would it not be possible to deflect it through a lens? Couldn't that increase the spread area significantly and because of the contrast at night you would only need a fraction of the light intensity to make an area feel well lit?

[–] [email protected] 15 points 3 months ago

You don’t need a lens, just a differently shaped mirror. Their point is just that the light you capture is based on the mirror’s surface area, so if you are selling sunlight-equivalent amounts of light you would need a mirror of equal area to that you are selling. You would not need such a large mirror to sell an area of dimmer light, and you would not need a lens.

[–] [email protected] 5 points 3 months ago

A convex mirror could work, sure. A lens would be impossible to construct for the size necessary.
I don't get what u mean by "contrast at night", but sure - let's assume that you would need 5% of the power at noon. You would still need a mirror with a surface area of 5% of the area you are illuminating.