• 1 Post
  • 39 Comments
Joined 1 year ago
cake
Cake day: July 1st, 2023

help-circle

  • I would check two things:

    1. Is it a QLED tv? Those are very efficient with the backlight power. QLED only have a blue led backlight and the “quantum dots” in the panel between the backlight and the LCD panel absorb the blue light and emit the red green and blue needed to create the full color spectrum.

    2. How many nits of brightness does it produce? I’d check for the specific model on RTINGS. It won’t help OP much if the TV is efficient, but so dim that it’s unusable in their case.

    Reflectivity also helps with brightness when viewed in a bright room. The less reflective (matte) the less brightness the TV needs to overcome distracting light sources reflecting on the screen.

    Edit: Had to look it up to be sure, normal LED panels use filters that filter red, green, and blue light from a white light source. This means roughly 1/3 of the light from the backlight is filtered away, hence the energy inefficiency vs QLED which uses the energy from the blue light to create the colors.

    Intestingly, some DLP projectors use alternating red, green, and blue light sources which strobe on the DLP chip which takes turns modulating the intensity of each color. Less efficient (and bright) DLPs use a single white light source and a color wheel (rotating color filter).












  • True on the digit by digit code decryption. That I can forgive in the name of building tension and “counting down” in a visible way for the movie viewer. “When will it have the launch code?!” “In either 7 nano seconds or 12 years…”

    If they had been more accurate, it would have looked like the Bender xmas execution scene from Futurama:

    https://www.youtube.com/v/aRdRZ6TKo4s?t=25s

    I did like the fact that they showed war-dialing and doing research to find a way into the system. It’s also interesting that they showed some secure practices, like the fact there was no banner identifying the system or OS, giving less info to a would be hacker. Granted, now a days it would have the official DoD banner identifying it as a DoD system.

    I remember with Windows 95, LAN Manager passwords were hashed in two 7 digit sections which made extracting user password from the password hash file trivial:

    https://techgenix.com/how-cracked-windows-password-part1/

    Looks like it was worse than I remember. The passwords were first converted to all upper case first!



  • First off, the water would need to be desalinated or you would ensure the land would be unsuitable for farming (and really growing anything) for generations.

    Also, sand doesn’t hold water. In fact, when planting trees and other bushes, if you want more drainage, you typically add rocks and sand.

    Second, most plants need non-sandy soil to grow on (palm trees and other beach bushes and plants aside) though those grow in areas that have lots of rain already.

    Thirdly, the soil will need bacteria to aid the plants in obtaining nutrients and breaking down waste (dead leaves, dead plantlife, etc).

    The way to do it is to look at a couple of projects that are fighting against desertification in Africa:

    1. The Great Green Wall https://education.nationalgeographic.org/resource/great-green-wall/

    2. Using compostable waste to fertilize soil https://jstories.media/article/greening-the-desert-with-trash

    You’ll notice that many of these projects start at the edges of deserts. Instead of relying on pumping water onto sandy soil (which would just suck up the water as sand doesn’t hold water that well) they focus on extending the non desert ecosystem onto the desert so that the new soil will absorb water better, the weather over the newly terraformed area will be less dry, and it will eventually be self sustaining.