WilsonWilson

joined 4 years ago
[–] [email protected] 76 points 1 year ago (1 children)

Employees of the embassies of the USA, Great Britain, Germany, France and Poland are allowed to enter the exhibition of NATO trophy weapons without queuing

wish I had the cash and spare time to go to Moscow and see this show.

[–] [email protected] 71 points 1 year ago (3 children)

Burkina Faso has suspended the BBC and US public broadcaster Voice of America over their coverage of a report accusing its army of mass killings. Broadcasts have been stopped and the websites of both organisations banned for two weeks, officials said.

The report by Human Rights Watch (HRW), a US-based group, accused the Burkinabè military of massacring at least 223 civilians in February.

Archive link

BBC link

[–] [email protected] 20 points 1 year ago (2 children)

there's also a solenoid actuated water valve in the back that needs to be opened by the controller. same thing happens in a washing machine except they usually use centrifugal force instead of a pump after the valve opens.

[–] [email protected] 5 points 1 year ago* (last edited 1 year ago)

I think the hose and marble analogy is still a good one

garden hose - conductor

marbles - electrons, charge carriers

Current - number of marbles thru a cross sectional area of the hose per second

Voltage - the force your using to push the marbles thru the hose

Resistance - measure of how easy/hard hose allows flow of marbles

If you make hose diameter smaller (increase resistance) you need to increase voltage push to maintain same marble current thru hose if you make hose diameter larger (lower resistance) then you need lower voltage push to maintain same current hose diameter smaller & voltage same the less marbles out the end -> less current hose diamter larger & voltage same get more marbles thru -> higher current

the analogy also works for signal velocity vs electron drift

signal velocity would be how fast marbles start coming out the end after you start pushing on them and if the hose was already full of marbles then they start popping out the end almost instantaneously

electron drift velocity would be how long it takes for a specific marble to work its way thru the hose

a transistor is a three terminal device. the two main terminals are ends of the hose. The third terminal is like a valve in the middle of the hose. When you open the vavle the resistance between the two main terminals is very low and allows current to flo.

Close the valve and the resistance between the two main terminals is very high and does not allow current to flo.

So the basic transistor config is a on/off switch.

An amplifier is operating this valve in an approximately linear region between off and on. If you want to amplify a small audio signal you connect it to the valve.

When signal is high the valve is more open and allows more current flow and signal low valve is more closed less current.

If you tap the two main terminals as your output you get the 'amplified' version of the signal you applied to the valve (with amp power coming from one of the main terminals)

[–] [email protected] 14 points 1 year ago

Ingredients: Mechanically separated ones and zeros, salt, natural and artificial flavors, caramel color, sodium chloride, butylated hydroxytoluene.

[–] [email protected] 29 points 2 years ago

Beriev_A-50 AWAC was shot down with SAM over the Sea of Azov and crashed in Russia near Krasnodar. Boris Rozhin says it was Russian friendly fire.

Ukrainian forces shot down an A-50 over the Sea of Azov on 14 January 2024 near Kyrylivka so thats two lost so far. In 2023 Ukraine claimed to have destroyed an A-50 parked at a Belarus airfield but the damage was to some external equipment. At the time Russia claimed they still had 9 to 10 operational A-50's from the 40 that were built by USSR.

They are currently developing the A-100 as a replacement but no public info about how many they have rn (at least one made a test flight a few weeks before the start of the war). I've seen video of an AWAC following Putin's jet on trips to Belarus and Saudi Arabia in 2023.

[–] [email protected] 82 points 2 years ago (21 children)

Putin endorses Biden

Asked in a state television interview to choose between Biden and Trump, Putin said the US leader was “more experienced, predictable, an old-school politician”, adding that Russia would “work with any US leader who wins the trust of the American people”.

At their last meeting in Geneva in 2021, Putin recalled, “they were already saying Biden wasn’t competent [ . . . ] but I saw nothing of the sort. Yes, he looked at his notes, and to be honest, I looked at mine. No big deal. So he banged his head on the helicopter when he was getting out of it — who of us hasn’t banged their head on something?”

[–] [email protected] 44 points 2 years ago (2 children)
[–] [email protected] 47 points 2 years ago (3 children)

I'm cleaning screenshots out of a desktop folder and I found this. Two years ago I wouldn't have any idea what this meme was about.

[–] [email protected] 29 points 2 years ago (2 children)

Lathe go brrrrr

[–] [email protected] 10 points 2 years ago (5 children)

NYC pop 8.468 million ~ 10,500,320 acres

us pop = 331.9 million ~ 411,556,000 acres

world pop = 8.1 billion ~ 10,044,000,000 acres

using .5 hectare estimate

[–] [email protected] 13 points 2 years ago (7 children)

The minimum amount of agricultural land necessary for sustainable food security, with a diversified diet similar to those of North America and Western Europe (hence including meat), is 0.5 of a hectare per person. This does not allow for any land degradation such as soil erosion, and it assumes adequate water supplies. Very few populous countries have more than an average of 0.25 of a hectare. It is realistic to suppose that the absolute minimum of arable land to support one person is a mere 0.07 of a hectare–and this assumes a largely vegetarian diet, no land degradation or water shortages, virtually no post-harvest waste, and farmers who know precisely when and how to plant, fertilize, irrigate, etc. From the FAO (the Food and Agriculture Organization of the United Nations (1993)

.5 hectare ~ 1.24 acres

view more: ‹ prev next ›