No, light is EM radiation. Not all EM is light.

Isn’t that distinction more philosophical than not?

Like the Feynman diagram is in any case that a photon is transmitted between two charged objects, whether that photon is “real” or “virtual”.

I know there are physicists who interpret this as there being two distinct things, either particle-like excitations (photons) and more general excitations (not photons). These usually don’t think of Feynman diagrams as representing anything real.

But I also know there are some physicists who consider virtual photons “real”. And in that picture of reality, all EM interaction is “light”.

Reddit attracts a lot of trolls. Managing the reddit takes work (moderation, keeping up with stupid reddit drama).

With a project discord, you're filtering out people immediately -- typically only people who want to be there wind up there. It makes things easier for a lot of people this way.

> With a project discord, you're filtering out people immediately -- typically only people who want to be there wind up there. It makes things easier for a lot of people this way.

Well. Yes. You filter out a lot of people, including legitimate users who would be interested but aren't going to deal with Discord. I'm not convinced that's actually a win.

You're gonna break that necklace if you clutch your pearls any harder.

I might break my nails if I do that!

I have to use Gmail at work and we are definitely paying for this crap.

We're actually looking at replacing Google Workspace with Fastmail or some alternatives.

We'll only miss Google Sheet but we'll still have to use some of their development tools and services (due to Android being completely closed – no way you can publish apps without Google Play Services these times).

There's no such thing as free; when you don't pay for something, you're the product.

t;dr: it's Japanese

That really was not the takeaway.

  …The paper found that, in terms of sheer number of syllables spoken per second, the fastest languages of the 17 studied were Japanese, Spanish, and Basque. The slowest were Cantonese, Vietnamese, and Thai.
  …
  What Pellegrino found is that, essentially, all languages convey information at roughly the same speed when all the factors are taken into account: around 39 bits per second. The higher the syllable-per-second rate, the lower the information density, which creates a trade-off that makes all languages around the same in terms of information rate.

So if you wanted to communicate the most quickly, you should rapidly speak in a more dense language like Cantonese or Vietnamese.

Do you talk with them, or talk at them? Are you the only one giving feedback? What feedback do you get from the employee you've been failing to connect with?

> Not sure what to make of this.

One possible conclusion here is that you are not as discriminating of a music listener as you assumed or thought you were.

The machinery is all commoditized and the same. Plumbing as a trade has been around for thousands of years. The level of sophistication here is limited.

You're exaggerating about light-bulbs. There is no way LEDs last less than incandescents. If you are experiencing this, its possible your wiring is bad. You should call an electrician and have them check that out.

There are some very bad, cheap LEDs on the market. Sometimes even under name brands. I've learned to be pretty picky about which ones I buy, both in terms of their longevity as well as the quality of the light.

LED dies often due to insufficient heat dissipation, which could be due to the cramped design of the actual light form factor.

Yes, when I bought a few LED lights from Aliexpress (years ago), they got broken in a few months. But I have philips LED light since ~2012 and that still works without any problem.

> There is no way LEDs last less than incandescents.

Sure there is. I bought a case of Sylvania LEDs in 2019. They're used a few hours a week and I've tossed 5 of the 15 I've installed.

I've been using a Philips 100W equivalent bulb for about 12 hours a day for almost 9 years now.

Companies can always manufacture garbage if they don't care, but LED technology is fantastic.

Exactly

Phillips master ultra efficient, similar to their Dubai lamp, may be what you need. Running much less power per led is more efficient, so there's less heat and the lifetime is massively increased. Big Clive put a good video out about Dubai lamps a few years back.

Same here - I am constantly replacing my LED lights whereas parts of my house still have 25 year old incandescents that have never been replaced since I moved in.

Same here. I keep a big box of LED lights hanging around in a box and am constantly replacing them. I had to replace incandescent lights too, but not nearly as often. Everything is designed to fail.

You are absolutely incorrect. Most of the LED bulbs on the market have incredibly poorly designed power circuits that absolutely cook the passive components.

Unfortunately my experience matches this - our LED bulbs are lasting between 2 and 5 years. There are truly just some cheap, shitty bulbs out there.

But, they cost £3 each and leaving them running 24/7 will cost you less than £20/year.

Standard incandescent bulb life was around 1000h. Do you use these LED bulbs only an hour a day?

I suspect most people simply forget how often highly-used incandescent bulbs had to be replaced.

Tachyons aren't a thing. Tachyons are sci-fi nonsense.

Nothing in the universe can travel faster than the speed of light. This does not hold for the universe itself. It can and does expand faster than the speed of light, using specific reference frames (i.e., big enough).

So, space can increase FTL. Particles do not travel faster than light tho, that is nonsense.

If the universe is expanding faster than the speed of light, how are particles not traveling faster than the speed of light indeed with zero acceleration relative to the expansion?

If the Copenhagen interpretation is correct, particle states are correlated after a photonic beam splitter; if you measure entangled photons after a beam splitter, their states are still linked.

If virtual particle states are entangled with particle states in black holes or through ER=EPR bridges, is there effectively FTL?

There is FTL within dielectric antennae.

Take a star in a region of the universe that recedes from us at 3c. In what sense is the star not traveling faster than the speed of light relative to us?

.

  v   - c < 0
  -3c + c = 2c
  +3c - c = 2c

Well, we have (virtual) particles that can travel backwards in time, without breaking causality. There's no proof that Tachyons exist, they are purely hypothetical, but they are not outright nonsense.

From https://news.ycombinator.com/item?id=38045112#38047149 :

> from https://news.ycombinator.com/item?id=35877402#35886041 : "EM Wave Polarization Transductions" Lt. Col. T.E Bearden (1999) :

>> Physical observation (via the transverse photon interaction) is the process given by applying the operator ∂/∂t to (L^3)t, yielding an L3 output

[and "time-polarized photons"]