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Cake day: June 11th, 2023

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  • You may already know this, but this depends on the focal length of the lens. For example, a 50mm focal length on a 35mm camera will represent objects in the background fairly accurately. Larger focal lengths have background compression, making their background look closer than it actually is. Focal lengths below 50mm will have the opposite effect, making backgrounds appear further away.

    Some phones with multiple cameras have a 50mm (or similar) effective focal length lens as one of the options. Basically without knowing the focal length of the lens it’s hard to say how accurately the distance of the background is portrayed.



  • I can’t speak to the superconducting potions of this comment, but the general computing information is mostly correct.

    Switching losses are a result of capacitance in the circuit. These capacitances aren’t going anywhere in transistors made from semiconductors. Additionally, even when a transistor is on it has some resistance, which of course creates heat whenever a current moves through that transistor. Leakage current also generates waste heat.

    I could see room temperature super conductors being useful as replacements for bus lines in a digital circuit, but this wouldn’t eliminate the heat in the circuit. Most of the heat is created in the transistor junctions, so the effect would be very minimal if even noticeable.


  • What’s better for climate change is less cars on the road, not underground roads. If we are going to be digging these expensive tunnels in every city they should be for subway systems. That would be a substantially better use of the funds and would be a good step towards reducing the emissions of a city. This is all assuming that we stop subsidizing car ownership so heavily of course.

    The entire process of building and repairing roads is pretty carbon intensive due to the amount of concrete involved.


  • A lot of these cars are starting to get massive touch screens too. I’m looking at buying a Prius and several of the trims have a 12 inch touch screen. Why would I ever need that as a driver? Why would I ever possibly want that? Pedestrian and cyclist deaths keep skyrocketing and we continue to out these massive screens in cars that in many cases can’t be turned off. Lawmakers really need to make auto manufacturers responsible for the part they are playing in enabling distracted driving.