Day: April 16, 2021
Mosquitos evolve to resist smoke, Circa 1400 (AD)
Taylor Swift beats The Beatles’ UK chart record as Fearless (Taylor’s Version) becomes her third Number 1 album in under a year
Life cycle of coffee
Jimi Hendrix’ passport
This doggo from New Zealand was trained to drive a car
A god on Earth
The pilot’s accuracy in aerial firefighting
Almost Every Galaxy Has One – A Black Hole, That Is
Spectacular jets are powered by the gravitational energy of a supermassive black hole in the core of the elliptical galaxy Hercules A. via NASA https://ift.tt/3dmNpUl
Elon Musk reveals the Hyperloop (2013)
These beautiful movie tickets from South Korea
Judge: R. Kelly to be moved to NYC for sex-trafficking trial
Meet the songwriters who told pop stars: ‘Don’t steal from us’
In 1930 the Indiana Bell Building Was Rotated 90° …
In 1930 the Indiana Bell Building was Rotated 90° over a 32 day period, during which time it had to be accessible and fully staffed. No one ever felt it move. All utility cables and pipes serving the building had to be lengthened and made flexible to provide continuous service.
Nature quote of the day
“Conservation is a state of harmony between men and land.” – Aldo Leopold
Art Quote of the Day
“The man who never in his mind and thoughts travel’d to heaven is no artist.” – William Blake
The Doubly Warped World of Binary Black Holes
Light rays from accretion disks around a pair of orbiting supermassive black holes make their way through the warped space-time produced by extreme gravity in this stunning computer visualization. The simulated accretion disks have been given different false color schemes, red for the disk surrounding a 200-million-solar-mass black hole, and blue for the disk surrounding a 100-million-solar-mass black hole. That makes it easier to track the light sources, but the choice also reflects reality. Hotter gas gives off light closer to the blue end of the spectrum and material orbiting smaller black holes experiences stronger gravitational effects that produce higher temperatures. For these masses, both accretion disks would actually emit most of their light in the ultraviolet though. In the video, distorted secondary images of the blue black hole, which show the red black hole’s view of its partner, can be found within the tangled skein of the red disk warped by the gravity of the blue black hole in the foreground. Because we’re seeing red’s view of blue while also seeing blue directly, the images allow us to see both sides of blue at the same time. Red and blue light originating from both black holes can be seen in the innermost ring of light, called the photon ring, near their event horizons. Astronomers expect that in the not-too-distant future theyâ€™ll be able to detect gravitational waves, ripples in space-time, produced when two supermassive black holes in a system much like the one simulated here spiral together and merge. via NASA https://ift.tt/3e56Lww
Cloudy today! With a high of 9C and a low of 9C.
2 C currently.
11 Km/h Wind from
2 C currently.
11 Km/h Wind from
Picture of the day for April 16, 2021
Wikipedia picture of the day on April 16, 2021: Stormy sunset over Waimakariri river basin, New Zealand. The picture was taken from Black Range More Info