sun

Researchers are developing photovoltaic windows that can provide shade and generate electricity

From a fastcodesign.com article: “Researchers at the Lawrence Berkeley National Laboratory are developing smart photovoltaic windows that can shade you and generate electricity at the same time ... This coated glass is about 82% transparent when it’s at room temperature ... At 7% efficiency, they’re still under the minimum of 10% that the team led by Professor Peidong Yang believes would be adequate for commercial purposes. Dou told me that they hope to reach that mark in the next three to five years ... They also face a manufacturing roadblock: the color. Right now, Yang’s team can get the glass to turn orange, red, and brown ... But the main problem, right now, is the glass’s temperature threshold, which they’re working to reduce to 122 degrees Fahrenheit, the typical temperature of glass exposed to a typical sunny midday.”

Unix/Linux code to test whether “today” is a weekend day (or weekday) alvin January 27, 2018 - 7:40am

If you ever need an example of a Unix/Linux shell script where you need to determine whether today is a weekend day, I can confirm that this code works:

The Milky Way galaxy sails through the Universe

The Milky Way galaxy sails through the Universe.
The Earth rotates, and revolves around its Sun.
The Sun shines in Earth’s blue sky.
A puffed-up bird tries to pull frozen seed
from the bird feeder while the cat watches,
and I watch.

Just breathe.

Find a person who loves you for exactly what you are

“The best thing you can do is find a person who loves you for exactly what you are ... good mood, bad mood, ugly, pretty, handsome, what have you, the right person is still going to think the Sun shines out your ass. That’s the kind of person that’s worth sticking with.”

~ from the movie Juno

That’s quite an illusion

The Milky Way is moving at over half a million miles per hour. (In the time it took me to type that, we sailed about 1,500 miles through the Universe.)

Inside the Milky Way, the Earth revolves around the Sun at 66,600 mph.

The Earth rotates around its axis at about 1,040 mph (depending on your latitude).

And yet, somehow I feel like I’m sitting perfectly still in this chair.

That’s quite an illusion.