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Cake day: June 18th, 2023

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  • IMAX film is twice as wide as standard film. 70 mm instead of 35 mm. The IMAX film platters are physically ginormous. All that extra film gives you a bunch of extra resolution compared to regular film.

    The first catch is that “IMAX standard” may not be real IMAX. I don’t know exactly what that means. Perhaps it could even be digital projection that aims to be comparable to IMAX in some ways?

    Second catch is that a lot of films that are shown in IMAX theaters were not actually shot on IMAX originally. If a film was shot on 35mm, say, and then printed onto IMAX, you don’t get all of the resolution benefits, and you may also get letter boxes or pan-and-scan because the aspect ratio isn’t the same. IMAX cameras are massively more expensive and logistically difficult than regular film cameras.


  • Usually in these stories, Batman or whoever leaves behind enough evidence to support a successful prosecution, along with the tied-up bad guy.

    The vigilante broke the law to gain evidence, so all the evidence the vigilante obtained would be thrown out,

    That’s actually an interesting situation. The fourth and fifth amendments put restrictions on the government, not private vigilantes. So if the cops just happen to find evidence in plain view, there won’t be a direct constitutional reason to suppress it.

    Now if the local prosecutor has a pattern or practice of deliberately turning a blind eye to the unlicensed private investigators that routinely supply them with illegally obtained information, there’s probably a claim there. But it’s a lot more complicated to make that case than a straight-up 4th amendment case.



  • They don’t like the U.S. either, as they believe that they are an imperialist power that wants to take advantage of the Middle East. That is one reason that the United States deems Iran an enemy.

    In 1953, the CIA and MI6 effectively ended representative democracy in Iran when they backed a coup d’etat that deposed Iranian prime minister Mohammed Mosadegh. Mosadegh had tried to audit the books of the Anglo-Iranian Oil Company (which later became a division of BP).

    The 1953 coup resulted in the Shah of Iran, Reza Pahlavi, ruling autocratically and with heavy support from the United States. This status continued until 1979, when an Islamist revolution deposed the Shah and installed the Islamist government led by a clerical Supreme Leader that exists today.

    In 2013, the CIA released declassified documents that showed that the CIA planned and carried out the 1953 coup using all kinds of abhorrent tactics, including bribery of public officials, astroturfed paid protesters, and false flag operations.

    So hopefully that explains why the US is “the great Satan” to Iran, and why Iran keeps spouting “death to USA” rhetoric.




  • The credit card companies have always tried to prevent merchants from doing this by inserting language prohibiting either credit card surcharges or cash discounts into the contract agreements with the merchants. Obviously, credit card companies want to make it easy and convenient for consumers to use their credit cards.

    I can’t immediately find it, but at some point I think 10-15 years ago, some merchants sued the credit card companies over this, and they won a court ruling that said that the clauses forbidding cash discounts and surcharging are unenforceable. As a result, merchants are now free to do it, but there are various rules. And some state legislatures have started to get involved with regulating things.




  • mkwt@lemmy.worldtoProgrammer Humor@programming.devClosing programs
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    2 months ago

    Windows does, in fact, have signals. They’re just not all the same as Unix signals, and the behavior is different. Here’s a write-up.

    You’re correct there is no “please terminate but you don’t have to” signal in Windows. Windowless processes sometimes make up their own nonstandard events to implement the functionality. As you mentioned, windowed processes have WM_CLOSE.

    Memory access violations (akin to SIGSEGV), and other system exceptions can be handled through Structured Exception Handling.


  • It was also common to have a single step mode, where the CPU advances one cycle per switch press. Very useful for debugging.

    And you could frequently read out the contents of registers directly on rows of lights. This led to the trope of the blinky light computer in Star Trek (original series) and elsewhere. Because the lights would flash in various patterns when the computer was running, as the register contents changed. But in the single step mode you could interpret the values.









  • If you’re getting into private jets, you should also know that brands have reputations even there.

    Gulfstream is a luxury brand within the private jet world. You can easily get a comparable product from Bombardier or Cessna Textron that performs equivalently, but only pay half as much operating costs as Gulfstream. Like Gucci, you pay a lot of money just for the Gulfstream name.

    At the low end of the market, Honda makes a small jet. (This is in the Very Light Jet category which bumps up against the turboprop market).

    At the very high end of the market you get into Boeing Business Jets, and the Airbus equivalent. These are converting airliners to your exact interior design specifications. Airliners are like another order of magnitude higher cost to operate.


  • There’s a class of orbits called “polar orbits” that are sideways and perpendicular to the spin of the earth. These orbits are useful for satellites whose main job is taking pictures of earth, because they will cover nearly all of the earth’s territory over time. You get into a polar orbit by launching to the north outer south.

    Aside from that, nearly all launches go towards the spin of the earth, because it’s a free boost. The fancy rocketry word for this is “prograde”.

    The sun appears to traverse from east to west in the sky. This means that the earth is moving the opposite way: west to east. So if you want to take advantage of the free boost, the rocket needs to take off in an easterly direction.

    The amount of spin you get is greatest if you launch from the tropics near the equator, and it falls off at greater north or south latitudes. In theory, if you set up a launch pad at the north pole, the spin boost would be zero in all directions, because you’re just rotating in place. At the equator, the free boost is around 1000 mph or 1600 km/hr.

    So the ideal launch site is as close to the equator as possible, and it has low population off to its east, in case the rocket blows up or crashes. The United States has two sites that meet these criteria: one in Florida and one in extreme south Texas. Both of these face an ocean to the east. Europe launches Ariane rockets from French Guiana in South America. Russia uses Kazakhstan, which is on the southern ends of the old Soviet Union.