116
submitted 1 year ago by tja@sh.itjust.works to c/xkcd@lemmy.world
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[-] quindraco@lemm.ee 19 points 1 year ago

OP, you should always include the title alt-text with an xkcd comic. Like so:

Getting the utility people to run transmission lines to Earth is expensive, but it will pay for itself in no time.

[-] tja@sh.itjust.works 1 points 1 year ago

Sorry, my app displays that automatically for xkcd links, so I did not think of that

[-] TimewornTraveler@lemm.ee 0 points 1 year ago
[-] rockerface@lemm.ee 13 points 1 year ago

So, a Dyson sphere

[-] slazer2au@lemmy.world 11 points 1 year ago
[-] 14th_cylon@lemm.ee 19 points 1 year ago* (last edited 1 year ago)

the only issue there is is you have to install the panel during night, it is quite hot there during the day.

[-] Hamartiogonic@sopuli.xyz 5 points 1 year ago

You could also wait for an eclipse.

[-] Smatt@lemmy.ca 3 points 1 year ago

Who are you, who are so wise in the ways of science.

[-] chtk@feddit.nl 5 points 1 year ago

I guess connecting the panels to the net is an issue for Infra?

[-] Ferk@kbin.social 8 points 1 year ago

They could send the energy wirelessly in the form of light beams, then use fotovoltaic panels to receive it from Earth. Let's call them "solar panels".

[-] addie@feddit.uk 5 points 1 year ago

That number didn't really seem enough to me. However, the solar luminosity is about 3.8×10^26 watts and the surface area about 6.1×10^18 m2, ie. 62.3 MW / m2. 8760 hours in a year times 62300 kW equals 545 million kW/h, at twenty percent efficiency times twenty cents each is $21.8 M/a.

The sun might seem to be really, really hot; but in fact, it is just quite hot and really, really big.

[-] visak@lemmy.world 4 points 1 year ago

Xkcd always does the math.

[-] TonyTonyChopper@mander.xyz 0 points 1 year ago

The corona is around 1 million °C. That's really really hot

[-] addie@feddit.uk 2 points 1 year ago

The corona is indeed super hot, but also quite tenuous in comparison to the rest of the sun. The photosphere is only about 5500 °C. If our solar panels were made of diamond they would have melted at 3500, but it's not impossible to imagine a solar panel that could be positioned 'quite' close to the sun's surface - would just need to be made from some quite fancy materials.

[-] p1mrx@sh.itjust.works 1 points 1 year ago

Installing a solar panel on the sun is easier said than done. The closest real example is probably the Parker Solar Probe: https://www.youtube.com/watch?v=pOZhPz92Dic

[-] JohnDClay@sh.itjust.works 0 points 1 year ago
[-] TimewornTraveler@lemm.ee 0 points 1 year ago

it really sucks having direct links instead of images on mobile

[-] morphballganon@mtgzone.com 2 points 1 year ago

Connect app shows this as an image

[-] psychic717@lemmy.world 1 points 1 year ago

Same on Infinity.

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this post was submitted on 08 Aug 2023
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xkcd

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