Impronoucabl

joined 2 years ago
[–] Impronoucabl@lemmy.world 2 points 1 week ago

the only thing they need is to read the cert and confirm the auth of the issuer.

You just glossed over why this is a hard technical problem in the first place - They also need to check the cert isn't revoked.

Otherwise, you can just hold onto a compromised cert, and reuse it.

[–] Impronoucabl@lemmy.world 13 points 3 weeks ago

Merit as a musician can only take you so far. In any creative career, the big famous artists aren't just good at doing their craft, they're also very good at making business deals to sell them. And even that's not always enough to become a superstar, you also need luck - your breakout/masterpiece needs to coincide with the latest trend, and preferably early in your career - a one-hit-wonder might be enough, but maybe not.

[–] Impronoucabl@lemmy.world 3 points 2 months ago

For the same reason that saltwater can remain separate from fresh water, or even hot water and cold water - diffusion is typically a slow process, particularly if you do not stir, or otherwise mix the substances.

Consider this: drop a single drop of food dye into a glass of water. There's no way the entire glass immediately turns into the relevant colour, it takes time for the molecules to move about.

[–] Impronoucabl@lemmy.world 2 points 2 months ago

Superconducting magnets don't heat up naturally, not without breaking. All we'd need to do, is engineer an isolated environment for the magnet, and there'll be no chance of it heating up, except maybe for an intense solar storm overwhelming it's magnetic shield.

Unlike earth, where there are multiple potential sources of heat, in space the only one of note is the sun. So yes, you can't remove heat via conduction or convection, but that also means that you can't gain heat from it. If anything, that simplifies the design.

[–] Impronoucabl@lemmy.world 1 points 2 months ago

The energy requirements for keeping a magnet out of the sun at all times, is probably considerably less than powering a conventional electromagnet for the equivalent duration.

We've already achieved this on the extreme end via the new horizons probe, I'm not sure what all the fuss is about.

[–] Impronoucabl@lemmy.world 3 points 2 months ago (5 children)

We could maybe make superconducting magnets strong enough to create a field to reduce the charged particles, but then you have to keep them powered

The superconducting magnets you describe, do not require ongoing power, only ongoing cooling. Which in space, is more manageable.

[–] Impronoucabl@lemmy.world 3 points 2 months ago

LCDs are designed to filter out extremely specific types of light, and in a specific direction.

It's true that the changing optical properties of each crystal could affect the albedo, but whether white or black is more effective is beyond my knowledge. It might even be neither, but green instead.

[–] Impronoucabl@lemmy.world 44 points 2 months ago (2 children)

No, and not because the effect is in any way small.

It is because a phone screen producing white light, looks white because it is actively generating white looking light. Compared to white paint, which looks white not because it generates its own light, but reflects other light, these are two different mechanisms for making things look 'white'.

Your phone has a brightness setting, to keep 'white' the exact same shade of white despite whatever viewing condition you have. A white paint does not, and as a result, looks different depending on the amount of light in the room.

So in your hypothetical, a white phone screen won't reflect less light as you presuppose - it'll generate more heat internally - unless you cover the screen with white paint.

[–] Impronoucabl@lemmy.world 14 points 2 months ago (19 children)

Interesting concept, but not very scalable. It's basically a reversed dam - when it's full, there's 0m head of water. Then with excess energy, you lower the level inside, storing the energy in the water outside. E.g -2m head. Water then flows in to equalise head, and doing so, regenerates electricity. Adding depth to supercharge pressure differentials is a good idea, although I wonder how they limit the flow rate, or otherwise prevent cavitation shocks each cycle.

Could be useful as a private industrial battery, but a dam would still be better on an infrastructural level.

[–] Impronoucabl@lemmy.world 5 points 3 months ago

The comic is out for preorder now as a hard copy too! (it's already available free online)

[–] Impronoucabl@lemmy.world 6 points 4 months ago

Before an instance does something malicious, how do you know it will be malicious?

Even if everyone there running it, & participating is pure of heart, how can you be assured that haXXors won't simply break in to take advantage of that trust you've given them?

Banning bad instances is a reactive stance that only applies after damage has been done. Can you convince the corporate overlords to take that risk? And it only increases as the fediverse gets more popular, and more instances get trusted.

[–] Impronoucabl@lemmy.world 22 points 4 months ago (2 children)

Yes and no.

Decentralized IDs exist, but will almost never be accepted by any large reputable institution.

Why trust every indie site to be 100% truthful, and definitely not full of malicious haXXors?

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