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ΔιαχειριστήςAdmin- Αριθμός μηνυμάτων : 26687
Ημερομηνία εγγραφής : 29/10/2010 
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2/6/2023, 17:52
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Craig Lawrence
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powered by solar energy
· Updated 3y
Why isn't the Tesla Gigafactory covered in solar panels?
As of the latest Google satellite image, they do have a decent number of solar panels on the roof of the Nevada Gigafactory. My guess just roughly counting panels is that they have about 500kW of solar. Which is probably a drop in the bucket relative to the power and energy consumption of that facil…
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Thomas Cayne
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Storyteller. Anthropologist. Naturalist. Madman.
· Wed
Which animal do people not see as dangerous but is extremely dangerous?
This little fella. And isn’t he just adorable ? Many people who find one take it in their hands to make some social media content, not realizing that their life could be over soon. Because the blue-ringed octopus is one of the most poisonous animals in the world. At any given moment, it carries enough…
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Silk Road
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AI Expert
· Mon
How do jet engines keep running above 10,000 meters or more when there is hardly any oxygen compared to the Earth's surface?
Jet engines are basically machines that suck in air, squeeze it, mix it with fuel, burn it, and then blast it out the back. This creates a lot of thrust, which pushes the plane forward. Now, you may have noticed that the air gets thinner and colder as you go higher up in the sky. This means that ther…
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David Thomas
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Professional Engineer, Civil, Alaska
· May 18
Is it possible to make a solar pool heating system with 500 feet of hose spread out on your roof recirculated by a pump?
Yes. The darker the pipe, the more effective it will be. It won’t have nearly as much temperature increase as purpose-built solar panels with very absorptive coatings, behind low-e glazing, and insulated on the backside. You should have some controls so the pump doesn’t run and consume energy when th…
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Giuseppe Frisella
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Student (2017–present)
· Apr 11
What if we dumped our trash into the Mariana Trench?
The Mariana Trench is a full 11 kilometers deep and in it, we could technically dump trash for centuries, if not thousands of years. The enormous pressure would also compact it and enable even more trash to be contained within it. Its size would be more than enough, but the real reason it is a stupid…
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Loring Chien
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electrical engineer and audiophile for 45 years
· Apr 23
The electricity generated by a power plant is three-phase, while the electricity used by residents is single-phase. What device is used for conversion?
No conversion is necessary, single phase power simply comes from using the voltage between any two phases. At electrical substations it is typically the termination for three phase power and three neighborhoods in different directions will each be powered from single-phase power from phase A-B, phase…
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Edward Hutchinson
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Former Retired Computer Programmer
· 6m
Which is more efficient in terms of energy produced per square mile- solar panels or wind turbines?
This is a somewhat purposeless question because space on which PV or wind is sited can continue to be used for other uses. PV can be massively distributed on existing buildings and over parking lots in urban areas and wind turbines are better suited to offshore or very rural sites. But for the sake…
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Tyler Morningstar
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Studied Biochemistry & Astrophysics at Advanced Placement (AP) Courses (Graduated 2018)
· Updated 3y
How can the Sun have over 99.8% of the Solar System's mass even though the star system has so much materials and planets?
Because the sun is…just…huge. It's really, really big. There is so much matter that makes up the sun that it's actually horrifying to even think about. Even Jupiter, our biggest planet, is small and relatively lightweight compared to the large star we orbit. If you look up scale models of these thin…
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Ray White
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Feb 13
Why do African-Americans claim to look mixed when most of them are dark skinned and do look ambiguously black similar to Afro-Caribbeans?
Hi. Black American here. You need to put, “some” in that question. As a Black American, I realize that people of sub-Saharan African descent have the most genetic diversity out of the human race and the most skin tone diversity, in fact. So, I’m not under that assumption. I don’t know how you managed…
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