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Campbell–Stokes recorder - Wikipedia
The Campbell–Stokes recorder (sometimes called a Stokes sphere) is a kind of sunshine recorder. It was invented by John Francis Campbell in 1853 and modified in 1879 by Sir George Gabriel Stokes. The original design by Campbell consisted of a glass sphere set into a wooden bowl with the sun burning a trace on the bowl. Stokes's refinement was to make the housing out of metal and to have a card holder set behind the sphere.
The unit is designed to record the hours of bright sunshine which will burn a hole through the card.
This basic unit is still in use today with very little change.
sunshine  sun  recorder  measure  device 
4 hours ago by gohai
Favorite: Golden Autumn at Eibsee., by Matthias Dengler ||
IFTTT  Flickr  matthias  dengler  snapshopped  alps  mountains  lake  island  forest  golden  autumn  fall  sun  sunrays  burst  sunshine  water  eibsee  bavaria  bayern  alpen  explore  travel  wander 
2 days ago by pauljacobson
Sunscreen Reminder Hat | Adafruit Learning System
Help remember to reapply your sunblock by building a reminder right into your hat! This sewable circuit uses a FLORA sewable microcontroller and its compatible UV index sensor to sense the sun and play a tune on a piezo buzzer when its time to refresh your SPF.
hat  adafruit  uv  arduino  fashioningtech  sun 
2 days ago by cyberchucktx
Fork Yeah! The Rise and Development of illumos
Bryan Cantrill’s famous rant about oracle.

As you know people, as you learn about things, you realize that these generalizations we have are, virtually to a generalization, false. Well, except for this one, as it turns out. What you think of Oracle, is even truer than you think it is. There has been no entity in human history with less complexity or nuance to it than Oracle. And I gotta say, as someone who has seen that complexity for my entire life, it's very hard to get used to that idea. It's like, 'surely this is more complicated!' but it's like: Wow, this is really simple! This company is very straightforward, in its defense. This company is about one man, his alter-ego, and what he wants to inflict upon humanity -- that's it! ...Ship mediocrity, inflict misery, lie our asses off, screw our customers, and make a whole shitload of money. Yeah... you talk to Oracle, it's like, 'no, we don't fucking make dreams happen -- we make money!' ...You need to think of Larry Ellison the way you think of a lawnmower. You don't anthropomorphize your lawnmower, the lawnmower just mows the lawn, you stick your hand in there and it'll chop it off, the end. You don't think 'oh, the lawnmower hates me' -- lawnmower doesn't give a shit about you, lawnmower can't hate you. Don't anthropomorphize the lawnmower. Don't fall into that trap about Oracle.
BryanCantrill  oracle  opensource  sun  solaris  business  culture  video 
6 days ago by jefframnani
Another star object of our new exhibition, The : Living With Our Star is this compendium tablet sundial c.1566.…
Sun  from twitter_favs
18 days ago by nigeljames
NASA successfully launched a spacecraft that will study the Sun’s atmosphere - The Verge
Parker will get even more boosts on its journey. Over the course of its seven year mission, it will perform seven flybys of Venus, using the planet’s gravity to go even faster and spiral in closer toward the center of the Solar System. Eventually, Parker will clock a speed of 430,000 miles per hour, making it the fastest moving space vehicle by far. The next fastest vehicle was Helios 2, an
nasa  space  sun  science 
18 days ago by Kirk510620
acschaefer/worldlight: Dynamic wallpaper for Raspberry Pi showing day and night regions on the globe
This repository contains all files necessary to set up a dynamic desktop background on Raspbian Jessie. The desktop background shows an image of the globe and how it is currently illuminated by the sun.
raspberrypi  timezone  map  globe  sun 
21 days ago by bezthomas
Congratulations to the winners of the 2019 WMO Calendar photo competition on the , the and the !…
earth  weather  sun  from twitter_favs
27 days ago by wlanderson
Sunspot observatory raided by FBI agents
He said AURA had “ordered the site vacated, providing no other reason than a “security” issue. He said the researchers did not spot anything in the sun to necessitate them leaving, nor were they aware of any scientific reason — such as an anomaly in the data they were collecting — for doing so.”
sunspot  sun  weirdness 
4 weeks ago by yorksranter
Sun Cream Protection Ratings Explained
Twitter thread of sun cream ratings and what they mean
Care  Personal  skin  Sun  Cream 
5 weeks ago by Alex-Blackman

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