The highest-resolution photos of snowflakes (2021)(smithsonianmag.com)

89 pointsby mhb3 anni fa26 comments

The highest-resolution photos of snowflakes (2021)

https://www.smithsonianmag.com/innovation/these-are-highest-resolution-photos-ever-taken-snowflakes-180976710/

28 comments

ggm3 anni fa

I increasingly find the no two alike thing exasperating. Almost nothing in nature above the subatomic/atomic/molecule level is "alike" in crystals or anything else. Making BIPM spheres of counted atoms does not truly make them identical. Cubic crystals of salt will have differences.

At the level of detail most people can discern, I suspect many morphological forms of ice crystal are very alike, and we have to resort to the small imperfections to get to not alike.

Nothing is exactly the same. That's what discrete countable things are: distinct.

(Of course it's semantics. And poetic license. Most snowflakes are trivially unlike, and those which are nearly alike have discernible difference if you go looking for them. As do cells, flowers, grains of sand.. )

j4yav3 anni fa

There's a whole class of factoids where it seems some people are unable to resist bringing it up even when the connection to the current discussion is quite tenuous, and a reactionary set of people who are unable to resist a stock reply to the mention (which varies depending on the topic, but generally it's an "actually" calling out some exception to the first statement). In reality, everyone has read both the factoid and the stock reply a million times.

It would be interesting to document and track these. They are almost like little autonomous programs that run on people's consciousness, which I guess is a just a meme per the original definition.

jerzmacow3 anni fa

Another one is measuring with football fields! We can't resist doing it, nor can we resist complaining about it

cwillu3 anni fa

Obligatory xkc… nevermind.

behnamoh3 anni fa

Do we have evidence or proof about "no two alike" or is it more like an educated guess?

beenBoutIT3 anni fa

Snowflakes processed via this method could be the future of true random.

topherclay3 anni fa

That's a fun thought experiment: to imagine what level of detail of snowflakes most people are able to discern.

Reminds me of a little bit of that one xkcd.

https://xkcd.com/2501/

zafka3 anni fa

Thanks! Your comment compelled me to look up olivine and then feldspar to check their formulas. Becoming much more aware of the makeup of minerals is on my list of things to do.

OJFord3 anni fa

> device, which stands at about five feet in height off the ground when placed on a table

And is about the length of three football fields when dismantled and spaced equally across them?

BobaFloutist3 anni fa

Good catch, that's a remarkably poor description. A table can easily be anywhere from like two to four feet tall, so this device is anywhere from one to three feet tall, neither of which sounds nearly as impressive as five feet.

ChrisArchitect3 anni fa

(2021)

Related from then:

Photos of Snowflakes Like You've Never Seen Them Before

https://www.nytimes.com/2021/03/10/science/snowflakes-photos...

dang3 anni fa

Thanks! Macroexpanded:

Highest resolution photos ever taken of snowflakes - https://news.ycombinator.com/item?id=25939169 - Jan 2021 (26 comments)

Ultra High Resolution Photos of Snowflakes - https://news.ycombinator.com/item?id=25414579 - Dec 2020 (88 comments)

tempodox3 anni fa

Related:

How big can a a snowflake get?

https://news.ycombinator.com/item?id=38797629

Earliest Snowflake Photos From 1885

https://news.ycombinator.com/item?id=38816521

hermitcrab3 anni fa

I don't understand how snowflakes are different to each other and yet also symmetric. Are they always symmetric?

firecall3 anni fa

I was also wondering why they form six arms, for want of a better description?

tim3333 anni fa

The symmetry is imperfect.

hermitcrab3 anni fa

I don't understand how they are even close to symmetric. The 'seed' seems unlikely to be symmetric. There is no way for one 'arm' to communicate directly with another. And the conditions (temperature etc) is unlikely to be completely uniform around that seed.

neurostimulant3 anni fa

> The ice crystals that make up snowflakes are symmetrical (or patterned) because they reflect the internal order of the crystal’s water molecules as they arrange themselves in predetermined spaces (known as “crystallization”) to form a six-sided snowflake.

https://www.noaa.gov/stories/how-do-snowflakes-form-science-...

hermitcrab3 anni fa

>Because each arm experiences the same atmospheric conditions, the arms look identical.

Thanks. But I'm still not convinced. If it is just that the microclimate around the seed is the same, why aren't adjacent crystals identical?

clintfred3 anni fa

Maybe they are? Has this been tested?

technojamin3 anni fa

Here's a fantastic Veritasium video about snowflakes with a scientist that basically figured out all of the ways they can form: https://www.youtube.com/watch?v=ao2Jfm35XeE

valiant-comma3 anni fa

Are these really higher resolution than the 2010 scans from an electron microscope[1]?

[1] https://www.wired.com/2010/12/snowflakes-by-microscope/

technojamin3 anni fa

Probably not, but those aren't photographs.

ekanes3 anni fa

Fun fact - the inventor is none other than Nathan Myhrvold, the OG patent troll.

hooloovoo_zoo3 anni fa

Hehe snowflakes should prove a patent challenge worthy of Myrvhold.

julieturner993 anni fa

HN title should note this article is from 2021.

[deleted]3 anni fa