Hacker News: steffenfrost

New comment by steffenfrost in "Roku developer repositories moved from GitHub to GitLab"

steffenfrost — Sat, 24 Oct 2026 16:31:06 +0000

A devops friend of mine said GitHub turned into a hot mess.

New comment by steffenfrost in "Relativistic Spaceship"

steffenfrost — Tue, 06 Feb 2024 01:30:07 +0000

Couldn't you shoot an electron bream ahead of the ship to ionize the atoms and the deflect them with a magnetic field?

New comment by steffenfrost in "School or Prison"

steffenfrost — Fri, 01 Jan 2021 22:12:10 +0000

I thought this was a proposal to give convicted criminals the choice between prison or school.

New comment by steffenfrost in "California plan for wealth tax on anyone who spends 60 days a year in the state"

steffenfrost — Sat, 19 Dec 2020 18:46:36 +0000

This is the camel's nose in the tent. If this is adopted, the threshold will move down and the percentage will move up and eventually will touch everyone.

Liberal politics turn everyplace into a disaster. CA was at a high bar so it is taking a little longer.

New comment by steffenfrost in "Facebook removes QAnon conspiracy group with 200k members"

steffenfrost — Sat, 08 Aug 2020 19:37:26 +0000

Mister Educated applauding the curtailment of speech.

New comment by steffenfrost in "CNO neutrinos from the Sun are finally detected"

steffenfrost — Sat, 08 Aug 2020 13:09:30 +0000

There is new data from the Juno Mission, that Jupiter has a diluted core.

"...heavy elements (elements other than hydrogen and helium) are distributed within a region extending to nearly half of Jupiter’s radius."

https://www.nature.com/articles/s41586-019-1470-2

New comment by steffenfrost in "CNO neutrinos from the Sun are finally detected"

steffenfrost — Fri, 07 Aug 2020 14:16:42 +0000

Why is the metallicity of the sun so low when they are so high for the planets?

New comment by steffenfrost in "Nanix: An idea for a modern, small, Unix-like operating system"

steffenfrost — Sat, 21 Sep 2019 17:49:38 +0000

What is a floppy disk?

New comment by steffenfrost in "Operation Northwoods"

steffenfrost — Sun, 01 Sep 2019 22:19:45 +0000

It's worth noting that when this was presented to Kennedy, he didn't have the general criminally charged.

New comment by steffenfrost in "Lunar bases may need to be quake-proof (2006)"

steffenfrost — Sat, 15 Jul 2017 19:38:44 +0000

Why would they turn off those seismometers? What a shame.

New comment by steffenfrost in "Dash for iOS: Back on the App Store"

steffenfrost — Wed, 24 May 2017 22:53:49 +0000

Dang, I thought it would be the wallet app. :(

New comment by steffenfrost in "New organisms have been formed using the first ever 6-letter genetic code"

steffenfrost — Sun, 29 Jan 2017 20:13:43 +0000

What could possibly go wrong?

New comment by steffenfrost in "New technique stores summer heat until it's needed in winter"

steffenfrost — Thu, 12 Jan 2017 21:25:16 +0000

If the system scales based on the fluid, the $/kwh could get pretty low. Would be interesting what a MWh amount of heat storage would cost.

New comment by steffenfrost in "The Hunt for the Death Valley Germans"

steffenfrost — Sat, 02 Jul 2016 07:34:02 +0000

Past midnight, couldn't stop reading.

Can't imagine the sheer horror of their predicament in that terrain, during the summer heat.

The author deducing how the Germans ended up in that canyon was a stroke of investigative genius.

New comment by steffenfrost in "Scientist Engineers Bacterium That Inhales CO2, Produces Energy"

steffenfrost — Mon, 30 May 2016 19:52:41 +0000

If this is so, then why can invasive species wreak havoc in an ecosystem?

http://ocean.si.edu/ocean-news/5-invasive-species-you-should...

New comment by steffenfrost in "Jury in Oracle v. Google finds in Google's favour"

steffenfrost — Thu, 26 May 2016 22:12:16 +0000

Would swizzling methods violate copyright?

New comment by steffenfrost in "Scientists can now make lithium-ion batteries last a lifetime"

steffenfrost — Fri, 22 Apr 2016 21:52:02 +0000

Lifetime cycles are an issue for Li-ion batteries.

For example, lets look at the Tesla Powerwall numbers. The Powerwall warranty covers 85% of capacity with 740 cycles in the first two years -- whichever comes first. Then it covers 66% capacity with 1,087 cycles in three years, and finally, it covers 54% of capacity for 2,368 cycles in five years. http://www.greentechmedia.com/articles/read/is-teslas-powerw...

Running the numbers for the Powerwall, 85%, 66%, and 54% of 7kWh is 5.4, 4.6, and 3.8kWh respectively.

(740cycles x 5.4kWh) + (1087cycles x 4.6kWh) + (2368cycles x 3.8kWh) = 17994.6kWh

Thus the cost per kWh stored is

$3000/17994.6kWh = 16.7 cents/kWh.

Not included is the shipping and installation cost, which could add another $300 - $500, which would run

$3300/17994.6kWh = 18.3 cent/kWh.

New comment by steffenfrost in "Ethereum Blockchain Project Launches First Production Release"

steffenfrost — Sun, 20 Mar 2016 18:00:38 +0000

Anyone know how many transaction per second the Ethereum network can handle?

Also, how fast does the blockchain grow in size in GB/month?

New comment by steffenfrost in "The 40,000-Mile Volcano"

steffenfrost — Tue, 12 Jan 2016 16:37:11 +0000

Yeah, that is bizarre.

How much do these volcanoes contribute to ocean acidification and over what time scales?

New comment by steffenfrost in "Why nuclear energy is our best option at the moment"

steffenfrost — Tue, 03 Nov 2015 22:04:17 +0000

Battery cost are projected to drop significantly over the next 5 - 10 years.