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A_A , to askscience in What if solving interstellar travel isn't about figuring out faster than light propulsion, but how to extend our own lives?
@A_A@lemmy.world avatar

Ha, thanks … not available freely online yet it is : en.m.wikipedia.org/wiki/James_S._A._Corey
James S. A. Corey (June 27, 2023). How It Unfolds. The Far Reaches. Vol. 1. Amazon. ASIN B0C4R4V6KN

A_A , to askscience in What if solving interstellar travel isn't about figuring out faster than light propulsion, but how to extend our own lives?
@A_A@lemmy.world avatar

Built a machine that can repair itself. Send it to a nearby planet. Give it the ability to manufacture human embryos from our genetic code using only inorganic material. Make at least 2 ; let’s call them Adam and Eve. Keep this machine somewhere hidden and near them so to guide them and their offsprings for a few milleniums. Someday, if they are mature enough, tell them what happened.

A_A , (edited ) to world in Portuguese tourist assaulted by Turkish police, jailed for 20 days for "looking gay"
@A_A@lemmy.world avatar

Are you serious ? He does look pretty pretty happy …freaking gay even.

A_A , to world in Portuguese tourist assaulted by Turkish police, jailed for 20 days for "looking gay"
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Before reading the headline, loocking at the tumbnail image, you & I thought …

spoiler… !

A_A , (edited ) to technology in Wind and solar unbeatable for low cost new electricity
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Most interesting indeed.
So the cost of energy is a complex topic and this guy has studied many aspects of that.

Amongst other things he wrote :
Morgan, Tim (2013). Life After Growth. Petersfield, UK: Harriman House. ISBN 9780857193391

He discusses the energy cost of energy or : Energy return on investment

He gives an estimate of $130 trillion usd for the global cost of energy transition with a link to the source… I don’t understand how this estimate is made though.

A_A , to selfhosted in Need a new Cable Modem
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Exactly and OP is :
@witch_of_winter
which you discovered by yourself 😌

A_A , to selfhosted in Need a new Cable Modem
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Lemmy thinks everything Fedia.io users post is from two hours in the future

A_A , to technology in Wind and solar unbeatable for low cost new electricity
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Yes, and :
What are the real costs before subsidies ?
What are the real cost of climate damage we try to mitigate - - which is the basis for subsidies ?

A_A , to softwaregore in talking about softwaregore, huh?
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The 2 most common errors in software :

  • off by 1 errors
A_A , to worldnews in Typo sends millions of US military emails to Russian ally Mali
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Hellooooohooo !!! Millions of emails !
How stupid can you be ? No Americans saw it ; only one Dutch guy could see it !

A_A , (edited ) to world in Australia baffled as unidentified mystery object washes up on beach (BBC News)
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UFO - - Unidentified Floating Object !

A_A , to world in Iran's morality police to resume headscarf patrols
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“morality” 🤣😂😭

A_A , to technology in Apparently, Google's new AI-based search is quite honest.
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“kill” (stopping a software process) okay,
… but what’s the “-9” here ?

A_A , (edited ) to worldnews in Japan's Fukushima nuclear plant prepares to release diluted radioactive water into the sea
@A_A@lemmy.world avatar

That 50 ton per day I recalled from long ago. So I had to make some search, here’s what I found :

  1. Ground Level Enhancement
    These effects are usually measured as elevated levels of neutrons and muons. These events can increase the radiation dose of an individual at sea level or while in an aircraft, though not by enough to significantly increase an individual’s lifetime risk of cancer. …and
  2. "solar wind"
    400 km/s x 5 ions/cm^3^ x 1g/mol x …(6400km)^2^ x 3.1416 x 1e15cm^3^/km^3^
    … x 86400s/day x 1/(6.02e23 ions/mol) This is about 37 tons per day, mostly proton and alpha particles.
    …
    I used the diameter of the earth instead of that of the magnetic field around the Earth, this is simplistic but should give an order of magnitude. I did not find better information and the real value should be found by someone else.

solar wind details inside :Properties and structure
Velocity and density :
“Near the Earth’s orbit at 1 astronomical unit (AU) the plasma flows at speeds ranging from 250 to 750 km/s (155–404 mi/s) with a density ranging between 3 and 10 particles per cubic centimeter and”…

A_A , to worldnews in Japan's Fukushima nuclear plant prepares to release diluted radioactive water into the sea
@A_A@lemmy.world avatar

Every day the Earth receives 50 tons of radioactive material from the Sun, so, can we see this in a global perspective : what are the numbers ?
( sorry if this is a double : server is lagging because of DDOS attack )

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