totallyabstract

5 ms·

1.
by totallyabstract 3y ago
Jet fuel has no lead, it's basically kerosene. Avgas for reciprocating engines (basically only small general aviation planes/helicopters) currently contains lead but is moving to be lead free in the US.
2.
by totallyabstract 3y ago
I think this is a bit of a pedantic take. My reading of the GP is to distinguish systems based on chemical batteries from systems based on gravitational batteries rather than the reaction time of the chemical cells specifically.
3.
by totallyabstract 3y ago
Also have to take into account that number was at ground level where there is the highest air density. I’m not sure what the landing and takeoff profiles looked like in the design but presumably the wings are that size so it can operate at
4.
by totallyabstract 3y ago
Sorry poor terminology use on my part. I mean more broadly that most energy is used on frontend and middle end, rather than backend and that this is what vectorisation improves in regards to energy consumption. Register renaming and branch
5.
by totallyabstract 3y ago
Wouldn't that support the idea that most energy consumption is in decoding? If you're getting 2x, 4x, 8x ect as much value computation per instruction and yet only a 30% increase in power then clearly most the power is not used by
6.
by totallyabstract 4y ago
Clickable links: https://jira.atlassian.com/browse/BCLOUD-12503 https://jira.atlassian.com/browse/BCLOUD-13021
7.
Six years on Atlassian still can’t add basic features to Bitbucket
11 points by totallyabstract 4y ago|2 comments
8.
by totallyabstract 4y ago
A French company made a product along these lines already, but I don’t think it’s been updated since 2018: https://blog.qarnot.com/introducing-the-qc-1-crypto-heater/ It’s true this is as good as resistive heating in t
9.
by totallyabstract 5y ago
For some two-way wireless protocols (like wifi) you have to take into account the guard interval, slot times and interframe spacing which are all values set in time (~1-50us). For long distance transmissions your speed-of-light limited sign
10.
by totallyabstract 5y ago
Presumably two different instances of this clock would have different tick rates due to the specific crystal used and it's very difficult to produce two identical crystals. An atomic clock is very consistent across devices as it exploi
11.
by totallyabstract 5y ago
There are separate micro op caches per core however they are typically shared among hyperthreads. I wonder if this could be another good reason for cloud vendors to move away from 1vCPU = 1 hyperthread to 1vCPU = 1 core for x86 when sharing
12.
by totallyabstract 5y ago
It will be interesting see if the next waves of wifi products solve this. For Wifi 6 and Halow there's a new feature called 'target wake time' that will let these devices sleep (and not pollute spectrum) for longer. Wifi 6 al
13.
by totallyabstract 6y ago
A recent development not mentioned in this article is Wi-Fi Halow/802.11ah, this is a new standard using the 900MHz ISM band. Advantages of this are better signal penetration/range for the same output power (or lower output power
14.
by totallyabstract 6y ago
You'd need two KC-46 to fully refuel a 747-400F. KC-46 holds about 120KL of fuel, the 747 takes about 200KL.
15.
by totallyabstract 7y ago
It depends what your are doing. Some chips can get down to about 100uw to maintain associated and send small amounts of data. I'm not sure how they would compare at 2mbit or how the range would compare.
16.
by totallyabstract 7y ago
It isn't an issue for smaller planes (A320, 737), but larger planes (such as 747, 777, A340, A380) usually have a lower maximum landing weight than their takeoff weight. If an emergency happens early in flight they usually have to dump
17.
by totallyabstract 7y ago
Some silicon labs arm MCUs and radios have hardened crypto core and hardened bootloaders. Their closest equivalent to the esp32 is the wgm160p but it lacks Bluetooth and costs more. Disclaimer: used to work there but this is all public info