lanna

We see the Moon as it was a second ago. We see the Sun 8 minutes ago.

We are always seeing the past. If you are talking to someone a foot away from you, you are seeing how they were a nanosecond ago.

[deleted]

Neutrons don't have charge, but their quarks do. Antineutrons have quarks with reversed charge.

Just like a neutral atom can have a neutral antiatom.

Well, how to calculate sum from 1 to 5000 ?

Instead of looping from 1 to 5000, you compute (1 + 5000) * 5000 / 2

This is what "understand problem first" actually means

Why does a desktop OS need to be consistent with a 5" touchscreen phone?

A year in the Gregorian calendar is 365.2425 days

Are they trying to make Scala look more complicated than the other languages on purpose? The Scala example f"$x%d plus $y%d equals ${x + y}%d" could be written simply as s"$x plus $y equals ${x + y}"

Dash for API browsing https://kapeli.com/dash

Flycut for clipboard management https://github.com/TermiT/Flycut

iStat Menus for system resource monitoring https://bjango.com/mac/istatmenus/

Kaleidoscope for file merging https://kaleidoscope.app/

OmniOutliner for note taking https://www.omnigroup.com/omnioutliner/

> The thought of the universe sitting essentially idle for 10^86 years

10^100 years minus 10^14 years is not 10^86 years. It is roughly 10^100 years.

> The interval for -20%-0% is the same length as that for 0%-25%. So, the transformation is not symmetric around 0.

It is. +0% is 1.0, -20% is 0.8, and +25% is 1.25.

0.8, 1.0, and 1.25 are a geometric progression (x1.25)

> advanced alien civilizations capable of interstellar travel would probably look at us like we look at mold

Like a mycologist, you mean?

What is economically viable to access is constantly shifting, either due to technology improvements or increased demand (hence prices).

> Why is it so common that I as an end user will notice a problem before whatever system is in charge of the status page does?

Survival bias: only when you notice a problem before the system in charge of the status page does, is that you notice it. When you don't, you don't notice it.

Some people seem to forget that in high-level programming languages, lines of code seldom map 1-to-1 to processor instructions.

Makes sense when you need access to special equipment. But most of us seldom need much more than a keyboard and screen.

You can't represent ! without being ambiguous with 1IL. You can't represent .,;:/+#(). You can't represent G, K, T, V, X, Z. The way you proposed to represent M and W is non-intuitive, to say the least. You cherry pick between lower and upper case letters, discarding half of them, only to shoehorn them into your model.

> We have a 26 letter alphabet, plus space, plus 10 numbers, plus the punctuation !?.,;:/-+#()". That's 50 symbols in total which works out to a bit rate of about 5.64 bits per letter.

Your choice of punctuation, most of which cannot be represented on a 7 segment display, is arbitrary[1], ASCII/US keyboard centred, and only added to your argument to increase bit count.

[1] why include /-+ but no *, =? # but no @, &, $, %? () but no []{}<>? " but no '?

Portugal?!? Never heard of Brazil?

> in the western world and signifiant places outside of it (SA,India, Thailand, Vietnam, Japan, Brazil)

Brazil is western

> The orbital period also goes up quadratically with distance

By Kepler's Third Law, isn't it proportional to the square root of the cube (3/2th power) of the distance?

> 3456-by-2234 or 3024-by-1964 is 14:9 Ratio

If we subtract 74 pixels from their heights, we get 3456 by 2160 and 3024 by 1890, both of which are 1.6. So I'm guessing the notch is 74 pixels high?

Myanmar units of measurement: https://en.wikipedia.org/wiki/Myanmar_units_of_measurement

This gives a better global picture: https://en.wikipedia.org/wiki/Metrication#Chronology_and_sta...

> In 2007, RIM [...] held multiple meetings after the iPhone was launched and accused Apple of lying about the capabilities of the new device. The claims focused on how it was impossible that a device with such a larger touch display could have any usable battery life. [0]

> [...] it couldn’t do what they were demonstrating without an insanely power hungry processor, it must have terrible battery life, etc. Imagine their surprise when they disassembled an iPhone for the first time and found that the phone was battery with a tiny logic board strapped to it. It was ridiculous, it was brilliant. [1]

I agree with you regarding the next iPhone not having satellite internet. But I don't think it represents "the sorry state of tech journalism" or lack of common sense. I can understand why some people would believe Apple is capable of doing the impossible: because they have seen Apple doing the "impossible" before.

[0] https://www.iphoneincanada.ca/news/rim-thought-the-2007-ipho...

[1] https://macdailynews.com/2010/12/27/rim_microsoft_were_in_de...

And 7 days older than Nevermind

This picture shows the difference after the city of Dunedin, New Zealand, changed all its sodium lights to shielded LEDs: https://i.redd.it/hxxp2c3ksdh71.jpg

> but the black hole would still have an extremely strong pull on it

No, it would not. Newton's third law: if an object has zero net pull on the black hole, the black hole also has to have a zero net pull on the object. The shell theorem is more general than you are assuming: it doesn’t matter if the heavier object is inside or outside, the surrounding object doesn't need to be spherical (it can be any shape as long as it fully envelopes the black hole) and the black hole doesn't need to be centered. I know it is a counter-intuitive result, but it can be easily proven with calculus.

See for instance this sentence about Dyson shells: "Such a shell would have no net gravitational interaction with its englobed star (see shell theorem)" https://en.wikipedia.org/wiki/Dyson_sphere#Dyson_shell

Edit: Related, what is bigger? The gravitational force the Moon exerts on Earth or the gravitational force the Earth exerts on the Moon? Veritasium has a nice video explaining the answer: https://www.youtube.com/watch?v=8bTdMmNZm2M

The net gravitational force is zero: https://en.wikipedia.org/wiki/Shell_theorem

And even then, his calculation is off by a factor of 5 or 10

It happens to me with the Baader–Meinhof phenomenon every time I hear about the Baader–Meinhof phenomenon