Temperatures near 40C have been recorded in Paris dozens of times since the early 2000s. I don't think the winter temperature in Paris has ever dropped much below -20C, let alone -35C. So this isn't a very fair analogy.

It's like satire. What is AC for if not extreme heat?

Comments URL: https://news.ycombinator.com/item?id=48465387

Points: 2

# Comments: 1

In the 1800s, detailed observations of the planet Mercury showed that its orbit was slightly different than Newtonian mechanics predicted-- a difference of about 43 arcseconds per century. The study was rigorous enough to rule out any observation errors.

Le Verrier, the astronomer who made these observations, wondered how to explain the difference. A decade earlier, he had noticed a similar irregularity in the orbit of Uranus, which led to the discovery of Neptune, whose gravity caused these perturbations. So Le Verrier reasoned that something similar must be going on for Mercury, and he posited the existence of Vulcan, a tiny planet close to the Sun.

Many attempts were made for decades to observe Vulcan. It was even included on some maps of the Solar System at the time (https://www.loc.gov/resource/g3180.ct003790). But it was never conclusively observed.

When Einstein published his theory of relativity in 1915, the mystery of Mercury's orbit was finally explained-- Newtonian mechanics were simply incomplete, and the irregularity of Mercury's orbit was due to relativistic effects.

Could it be that something similar is happening today? Observations of gravity on galactic scales doesn't quite align with what relativity would predict, so we use dark matter to fill the gaps. We've tried for decades to detect dark matter, with no dice. Is our theory of gravity simply incomplete?

MOND may not be the solution, but I'm still skeptical about dark matter.

I’m getting so tired of these posts. Why waste our time?

Comments URL: https://news.ycombinator.com/item?id=47914057

Points: 5

# Comments: 0

Comments URL: https://news.ycombinator.com/item?id=47772458

Points: 1

# Comments: 0

We're not meant to do anything. It's not like we were consciously designed with a purpose in mind. Do whatever you want.

Why even bother?

Comments URL: https://news.ycombinator.com/item?id=47614822

Points: 1

# Comments: 0

Some brands offer coating you can DIY yourself (eg ProofTech OLEOPEL) but these seem mostly designed for phone screens. I don’t know whether they’d be as effective on laptop screens

Imagine, for the sake of simplicity, you could express the song's waveform with the function 13 * sin(41x).

The derivative of this function is 533 * cos(41x).

Cosine, of course, is just a phase shifted sine, and the constant coefficient inside the function stays the same. So you're not changing anything about the shape of the wave, just stretching it vertically.

This has the effect of mimicking a "high pass filter," amplifying the volume of the highs.