751
This photo by Michael Fontaine shows an incredible sighting of several simultaneous waterspouts churning off the states of Louisiana and Mississippi on August 20, 2020 [read more: buff.ly/3aMslE2] [source of the photo: buff.ly/3ghNrv2]
752
Margaret Hamilton standing next to the navigation software that she and her MIT team produced for the Apollo Project and sent humankind on the Moon in 1969
[📷 buff.ly/3F4tciQ]
[read more: buff.ly/2NSUKjZ]
753
How educator Alycia Zimmerman used her students’ favorite plastic blocks to help them learn math skills
[read more: buff.ly/2L0PCq3]
754
Have you ever wondered how an ATM works?
[video by @ScienceChannel: buff.ly/3B4j1cP]
755
Indonesia's Mount Semeru volcano has erupted, sending sending pyroclastic density currents and ash billowing into the sky, sparking evacuations on the country's main island, Java
[read more: buff.ly/3h1TCdd]
[video, HD: buff.ly/3P11AzZ]
756
This drone footage was captured by @ReedTimmerAccu in Andover, Kansas in May 2022 and gives a good visualization of how a tornado forms
[video: buff.ly/3nLVvdz]
757
While the casting process dates back more than 5000 years, sand casting was first documented in 1540 & only took off in the early XX century with the rapid expansion of the automotive industry
[more: buff.ly/3aKWSC9]
[📹: buff.ly/3l4HsNP]
758
Very few species have been observed imitating human behavior, but the list of observations has recently grown.
These two studies explore animals imitation of humans: buff.ly/3Ig68xP, buff.ly/33lQNN6
[📹: buff.ly/3qxuU6h]
759
This gloved hand holds life-sized models of nuclear fuel pellets with their injection rod. Each pellet can produce the same energy as 3 tons of coal, so this handful equals ~60 tons of coal or ~28,000 m³ of gas or ~34,000 liters of oil [source, read more: buff.ly/3OJxjV5]
760
Common Baron caterpillars are camouflage experts like no other They quite literally become one with the leaf
[read more: buff.ly/3UpbFaQ]
[📹: buff.ly/3iCazLw]
761
A veneered desk surpirsigly full of hidden compartments: the sloping fall enclosing a fitted interior of faux book and hidden drawers, a staircase gallery interior, above a short frieze drawer flanked by dummy drawers
[read more: buff.ly/3h4JOyZ]
762
This popular gif shows how you can obtain the surface area of a sphere using the sinusoidal projection
[source: buff.ly/2QZozPD]
[the sinusoidal projection: bit.ly/2nph9Ex]
763
This time lapse possibly illustrates the most meaningful portion of an Eurasian blue tit's life, from when it finds the place for a new home, to the moment it raises its young
[📹 nestboxlive: buff.ly/3FzisuB]
764
Strong winds creating the reverse waterfall in Maharashtra, India
[📹 Yash Mayekar: buff.ly/3H6qP1N]
765
Photographer Peter Maier captured this jaw-dropping timelapse of a cloudburst over Lake Millstatt in Carinthia, Austria
[source, full video, HD: buff.ly/2Mv5n7G]
766
The hammered dulcimer is a percussion-stringed instrument which consists of strings stretched over a trapezoidal resonant sound board, played with a mallet hammer.
[read more: buff.ly/3P0u7pl]
[📹 Ted Yoder: buff.ly/2EhLzmW]
767
Pure samples of hydrogen, nitrogen and five noble gasses are subjected to the high frequency pulsed field of a miniature Tesla coil. Each gas has a characteristic breakdown voltage and emission spectrum
[source, read more: buff.ly/3frLyOD]
768
A sneaker wave is a disproportionately large coastal wave that can appear in a wave train without warning. This video was shared by Marcella Ogata-Day to help bring awareness of the dangers of sneaker waves
[source, read more: buff.ly/3GyVgu9]
769
Lake Meade, 1983 vs 2021
[source, read more, photos: buff.ly/3OYsmbY]
770
The koala has one of the smallest brains in proportion to body weight of any mammal, weighing only 19.2 g. Because of this, they have a limited ability to perform complex behaviours. When presented with plucked leaves, they don't recognize them as food ow.ly/9pFB30o02Xo
771
Flamingos often stand on one leg: the reason for this behaviour is not fully understood and one theory involves the maintenance of body temperature. Young flamingos need therefore to learn to do this at an early age
[read more: buff.ly/3FyK5jV]
772
The story of the tiger that in 1997 was wounded by a poacher who also stole part of its kill: the tiger found the poacher's cabin, destroyed his belongings, waited at least half a day for him to return, then killed and ate him
[read more: buff.ly/2IhMG4w]
773
A shape-memory alloy (SMA) is an alloy that can be deformed when cold but returns to its pre-deformed ("remembered") shape when heated.
[read more: buff.ly/3F34VcT]
[source: buff.ly/3B9ZfwJ]
774
Thomas Young proved that light is a wave, described elasticity, capillary action, explained how our eyes see colors, compared 400 languages vocabulary, deciphered hieroglyphs and contributed to music theory. He is called "The last man who knew everything" buff.ly/3gcAiDo
775
Buick created the first car touchscreen on its model Riviera in 1986. The technology was dropped because customers found it onerous and distracting
[read more: buff.ly/3iXRoa4]
[full video by doktorebuick: buff.ly/3tv2lbv]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links