The ability a physical system has to do work on other physical systems.
Questions tagged [energy]
87 questions
6
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Did Tesla say that one could get or transmit energy through thin air
Possible Duplicate:
Can you create energy out of nowhere ?
I recall reading that Nikola Tesla suggested that electricity could be created from the air. This claim is stated in the following quote from a humourous comic on the Oatmeal:
You know…
Brian M. Hunt
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Is Australia the highest per capita emitter of greenhouse gases in the OECD?
The Australian earth hour web site claims that Australia is the highest greenhouse gas emitter per capita in the OECD. I've also heard this claim elsewhere.
DID YOU KNOW… Australia is the highest greenhouse gas polluter, on a
per capita basis,…
Andrew Grimm
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Does an “average-sized” power station pay over a quarter billion pounds per day when unable to generate electricity?
Given the war in Ukraine and associated sanctions on Russia and reciprocal withholding of supply, Europe is facing a gas shortage.
The UK imports very little Russian gas, but because of the reduced supply is still facing potential shortages over the…
Tim
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Does the average carbon footprint per bitcoin transaction range from 233.4 to 363.5 kg of CO2?
https://www.cell.com/joule/fulltext/S2542-4351(19)30087-X says,
According to the Bitcoin Energy Consumption Index, Bitcoin’s energy use in 2018 translates to a carbon footprint of 19.0 to 29.6 million metric tons of CO2 (475 g CO2 / kWh). The…
5
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1 answer
Will renewable energy strategies generate a net increase in jobs?
In the battle against climate change we often hear that new renewable energy programs will generate a large number of new jobs. At the recent Paris Climate summit Boris Johnson said that a green recovery from Covid would generate opportunities for…
bondonk
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Is the production of nuclear power very expensive?
Reuters recently published the following piece:
Nuclear energy too slow, too expensive to save climate: report
Inside, it says:
The cost of generating solar power ranges from $36 to $44 per megawatt hour (MWh), the WNISR said, while onshore wind…
einpoklum
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Did the Falkland Islanders only have peat as fuel until the arrival of the Argentine oil companies?
I found this paragraph in the Spanish wikipedia entry about peat.
A group of Falklanders shoveling peat around the 1950s. Peat was the
only form of fuel used in the Falklands until the arrival of
the Argentine companies YPF and Gas del…
Ginasius
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Does the Bitcoin network consume as much energy as Denmark?
According to Ars Technica:
One estimate suggests the Bitcoin network consumes as much energy as Denmark.
There are other sources that make similar claims:
Greentech Media claim:
The Bitcoin Energy Consumption Index tracker puts Bitcoin’s…
Fluidized Pigeon Reactor
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5
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Does Leonardo DiCaprio fly on private jets?
Does Leonardo DiCaprio fly on private jets?
Example claim: Leonardo DiCaprio flies 8,000 miles in private jet to accept ‘green award'
Oscar-winner Leonardo DiCaprio flew an additional 8,000 miles from
France to New York and back to accept an…
Andrew Grimm
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Does the Theradome Laser Helmet deliver around 7 J/cm2 to the head?
The Theradome Laser Helmet is claimed by its manufacturers to promote healthy hair growth.
In this infographic, they claim it delivers energy to the skull at a concentration of 6.959 j/cm2 - presumably they are referring to 6.959 J/cm2.
.
This is…
RocketRuwan
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Are 2–4 hour washing machine programs eco friendly?
New washing machine (at least in the EU) often have a special program named with something like "green" or "eco" and that are supposed to be environmentally friendly. These are often for around 2–4 hours, compared to the other programs (on the same…
citizen
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Nanoscale hydrogen batteries that use water-splitting technology
It was claimed in this article in 2019 that a nano-battery using water splitting technology is developed. It is described as:
The battery gains its charge by interacting with water molecules present in the surrounding air. When a water molecule…
RLR
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4
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Neutrino “Solar Panels”: This can't be for real, is it?
I'm having my students research new energy technologies. One of them came across this website:
-Neutrino energy: harnessing the power of cosmic radiation
The website promotes a deeply unlikely energy technology: They say they can get a significant…
David Elm
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4
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Is the Rossi Focardi LENR true?
Italian inventor Andrea Rossi claims to have discovered cold fusion. There is a history of dis-proven discoveries in this area. How were they debunked and are the arguments applicable to the new case…
Roland Kofler
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Do the US have enough gas resources to last about 90 years?
In the 2012 State of the Union Address the then president Obama stated:
We have a supply of natural gas that can last America nearly 100 years
Since the speech was done more than 10 year ago, now there should be still gas for at least 80 to 90…
mustermax
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