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Joined 2 years ago
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Cake day: June 9th, 2023

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  • Almost all compact cameras lack a viewfinder. They are competing with phone-photography, which they are losing.

    The weak point of taking photos with mobile phones is the screen. In bright sunshine, you can not make good photos. So I would say: make a simple, small viewfinder camera with software- & sensor- technology similar to phones, with a slightly better lens. Keep it really cheap for almost throw-away price so everyone can afford it and a lot can be sold. It would have a small screen and a viewfinder so taking pictures in bright light is easier. It can cast a slideshow to TVs and computers (the small screen would work as a remote control, swipe for next). An accessory like HDMI to Wifi (Chromecast-like) stick can be sold.

    It could be the modern interpretation of the iconic Kodak Instamatic.





  • itsametoTechnology@lemmy.world*Permanently Deleted*
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    165 months ago

    The precedent was years ago with Facebook and WhatsApp blocking alleged anti government messages (which the court branded as anti-nation, sedition). Last year the BBC documentary about Modi and alleged fascism was world news and led to the departure of BBC from India. The problem is that the world sees India as an emerging market where in fact it is a fascist country in the making.







  • What is your source?

    High power is a matter of scaling (and size/space constraints). To increase the power output, the membrane size can be increased or multiple power cells can be installed as explained in the article:

    If you want to store more energy, just increase the size of the solution storage tanks or the concentration of the solutions. If you want to provide more power, just stack more cells on top of one another or add new stacks.




  • First of all, their claims are not new. They claim this for a long time already but have not shown a minimal viable product yet. During the time they spend money in research, Tesla batteries grew to 3 times the originals.

    QuantumScape have only shown minuscule batteries, they need to scale up to car battery capacity. Only a car with their battery can prove their claims. Until that happens their stories are worth nothing.

    Charging a 75kWh large car battery in 15 minutes requires a charger of at least 300.000W. Imagine a charging station for 5 cars would need a 1.5MW power station. That is impractical. Also the current flowing into the car would be enormously high, requiring huge cables. Also inside the battery pack, huge cooling systems are required.

    More practical solutions are exchanging battery packs or battery fluid exchange (flow battery). In short time 100% recharge and virtually unlimited range if packs are slowly charged at exchange hubs. .

    QuantumScape will water down their claims and eventually publish a more or less standard LiFePo battery if the investors are lucky.