HNHacker News
TopNewBestAskShowJobs

frgewut

213 karma · joined August 13, 2015

submissionscomments
frgewut··on What if the Placebo Effect Isn’t a Trick?
I thought testing against placebo was a standard procedure in medicine and without such testing treatments wouldn't even be approved.
frgewut··on As women have more equal opportunity, the more their preferences differ from men
> I don’t think it is an accident that the world’s top female boxer is Norwegian rather than say Italian.

You mean the Colombia born Cecilia Brækhus?

https://en.wikipedia.org/wiki/Cecilia_Br%C3%A6khus

frgewut··on Astronauts escape malfunctioning Soyuz rocket
Atmospheric reentry is more than 1g

https://www.quora.com/What-is-the-acceleration-of-the-space-...

frgewut··on Astronauts escape malfunctioning Soyuz rocket
I would interpret it as "fallen horizontally" with a lot of braking happening lately in the atmosphere.
frgewut··on This technology would spot a secret chip in seconds
Slightly offtopic, but most easiest way for detecting tampering with hardware is weighing stuff.
frgewut··on Hubble Space Telescope Is In Safe Mode After Gyro Failure
Couldn't you measure star motion over longer periods of time, then even minuscule amounts of motion could be detected.
frgewut··on The down side to wind power
I have started to view "baseload" generation more in a negative sense (as in "can't be easily turned on/off").

Also the daytime/nighttime power consumption differs almost twice, so almost any solar added only smoothens out the difference.

Also the new offshore wind turbines (>10MW) offer some extraordinary capacity factors (~60%). Makes me wonder what these capacity factors could be if we could get to 20MW turbines.

frgewut··on Ikarus electric “rocket” – Thrust-vectored flying ducted fan [video]
Mosquito net is the first thing that comes to mind.

Then EM pulse weapons, lasers etc.

frgewut··on Woman Rides Bicycle to 183.9 MPH, a New World Record
How much energy is actually transferred from car to cyclist?

Records with too strong assisting wind often are not recognized. [1]

[1] https://en.wikipedia.org/wiki/Wind_assistance

frgewut··on Elon Musk unveils first tourist for SpaceX 'Moon loop'
I suspect publicity created by this will easy recoup all expenses.
frgewut··on Germany launches world's first hydrogen-powered train
There are also "partly electrified" possibility e.g. only 10% of track electrified (stations for example). Trains can recharge batteries or supercapacitators there from wire. There already are such existing light rail lines.

[1] https://en.wikipedia.org/wiki/Battery_electric_multiple_unit

frgewut··on Van Gogh Museum's High-Quality Reproductions
But the Statue of Liberty in Las Vegas apparently is a creative replica.

[1] https://www.nytimes.com/2018/07/05/arts/statue-of-liberty-st...

frgewut··on AirConsole – Play multiplayer games together
It's actually a real problem. Most browser games are still Flash - meaning I can't play most of them.
frgewut··on Juvenile or adult? Leap-year suspect poses conundrum for court
But then your birthday date would fluctuate.
frgewut··on The Effectiveness of Publicly Shaming Bad Security
Bugs can happen.

One of the first scenarios that comes to mind - some implementation queries API for every key press. Suddenly you are sending your password out.

I guess time will tell, but human-generated passwords have proven their ineffectiveness anyway.

frgewut··on Optical fibre made in orbit should be better than the terrestrial sort
Of course satellite manufacturing is only a small part of the satellite industry. I updated comment to reflect that.
frgewut··on Optical fibre made in orbit should be better than the terrestrial sort
Actually launch industry is minuscule compared to satellites ($5.5B for launch industry vs $13B only for satellite manufacturing)

Edit: and then of course there is the satellites services which the report estimates in hundreds of billions $.

[1] https://www.sia.org/wp-content/uploads/2017/07/SIA-SSIR-2017...

frgewut··on You can't play Bach on Facebook because Sony says they own his compositions
On the other hand YT is full of various Peppa Pig videos (inverted colors, mirror images and all kinds of other weird transformations). YouTube's algorithm apparently can't detect such copyright violations. And the really annoying part is that these videos often rank higher than the original ones.
frgewut··on Toyota Investing $500M in Uber in Driverless Car Pact
According to Waymo most of the miles driven are simulated ( 2.7 billion miles in 2017). That's an order of magnitude more than actual miles (25K per day)[1]. And even the actual miles mostly don't have any user input.

Because of this I'm leaning towards thinking waymo isn't trying to mimic actual human input.

[1] https://waymo.com/

frgewut··on Electric Scooters in New York City? They Just Might Work
> Bike lanes (IMHO) have made traffic significantly worse because they're thoroughly underutilized and basically kill a lane of traffic (on the avenues at least).

Underutilized bike lanes is mostly an illusion. If a bicycle lane would be 100% utilized that would mean tens of thousands of people traveling each day. Probably equal to capacity of multiple car lanes.

frgewut··on A Map of Wireless Passwords from Airports and Lounges
Actually WPA with pre-shared key doesn't provide any security if key is publicly known (as someone can setup mitm device).

For wifi without password you should look at WPS.

frgewut··on Tesla opens the Model 3 reservation floodgates
They say that cars will be delivered in 2 to 4 months. Also ordering costs $2500.

I thought it is common to pay full amount upfront upon ordering cars, then wait a month or two for actual delivery.

frgewut··on Electric scooter “mayhem” sounds like when cars were introduced
The only thing I don't understand is the renting - these things are meant for owning them. You can store scooter under desk in office or under bed in condo.
frgewut··on New in Chrome 66
Reading from clipboard without explicit permissions would be a severe security issue.
frgewut··on New Record Low Solar Price in Abu Dhabi – Costs Plunging Faster Than Expected
I would say it does. According to [1] 5% of electricity is generated from oil. Also I would guess that this capacity is mostly located in places where other generation types are not available (islands, remote locations etc) and will be overtaken by solar before coal.

Then also there is EV+solar combo (solar owners are more inclined to get ev and vice versa).

[1] http://www.tsp-data-portal.org/Breakdown-of-Electricity-Gene...

frgewut··on Show HN: Ball falls on the teapot in WebGL
Floating point rounding errors are deterministic.
frgewut··on New “Leaf” Is More Efficient Than Natural Photosynthesis
Does anyone know how does the efficiency of an entire tree compare (i.e a single leaf reflects some light, which then is absorbed by another leaf)?

I would guess that number should be higher than simple "photosynthesis efficiency".

frgewut··on How the Arab World Came Apart
Prussia was also the last paganic part of Europe.
frgewut··on Cjdns: a secure non-anonymous P2P network
If someone could eliminate their $50-$100 internet access bill it could be a huge motivator.
frgewut··on Wasted in San Francisco
In Eastern Europe you often would get an entree (soup or salad), main dish and dessert.
Page 1 of 3Next →