2101
Squirrels' brains can grow in size during the fall to help them remember where they bury their nuts. Their brains are smaller the rest of the year [read more: buff.ly/2FMp6R7]
2102
In this digital hourglass by BitBlt_Korry, controlled by a Raspberry Pi Pico & running code in MicroPython, iron filings fall between two pieces of plexiglass while numbers appear, counting down 30 seconds
[source, read more: buff.ly/3NWVDTP]
2103
Take the orbits of any two planets and draw a line between their positions. The inner planet orbits faster than the outer planet and interesting, spirograph-like patterns will evolve. These are Jupiter & Mars
[CaptainGranit: buff.ly/2G1xaOP]
2104
This is a very high level visual chart that shows the basic differences between diagnostic imaging and their main purpose, with focus on the head and brain area.
[source: buff.ly/3sWhsL7]
[explanation: buff.ly/3ELw5De]
2105
Aviation Week’s Rupa Haria took this video of a wing-morphing “flexfoil” demonstrator. It illustrates how the airfoil shape could change in flight to boost performance over a wide range of angles of attack, indicated airspeeds and Mach levels [source: buff.ly/3w3QyzM]
2106
Trapa bicornis is an annual aquatic plant whose seeds pod strongly resemble a devil, a bull or a bat
[read more: bit.ly/2yZZBqz]
2107
John Derting's clips routinely take the viewer where few dare to explore, across rugged glaciers, through half-frozen rivers, and into dangerously beautiful ice caves
[read more: buff.ly/3RLI5Mo-]
[IG: buff.ly/32pWVTJ]
2108
Jacinto Convit, the scientist who developed the vaccine to fight leprosy and was still working to find a vaccine for cancer on his 100th birthday. Described as a popular hero, he never charged a person for the care he gave [read more: buff.ly/2L9dwOF]
2109
This is the first acknowledged picture of M31 or the Andromeda Galaxy, taken exactly 134 years ago #Today by engineer and amateur astronomer Isaac Roberts bit.ly/2hs77xX
2110
Without touching a single piece of land, it's possible to sail from Pakistan to Russia in a completely straight line (or more precisely along a geodesic line or an arc of cirumference, but appearing like a straight line on a globe)
[read more: buff.ly/2rkutg7]
2111
The functioning guitar the size of a human blood cell (with six strings each about 50 nanometers, or 100 atoms, wide) that the Cornell University scientists created in 1997
[read more: buff.ly/2sWwK1A]
2112
How do you get a 3,500 ton littoral combat ship from the shipyard into the water without a set of well-coordinated supercranes or help from a friendly giant? Sliding it sideways [LCS 7 Detroit side launch into Wisconsin’s Menominee River on Oct. 18, 2014: buff.ly/2A0epoa]
2113
Ground resonance is an imbalance in the rotation of a helicopter rotor when the blades become bunched up on one side of their rotational plane & cause an oscillation in phase with the frequency of the rocking of the helicopter on its landing gear [video: buff.ly/2HDqwtG]
2114
A graphic tester like the Geekcreit GM328A can easily identify the components connected to the pins, detecting PNP, NPN bipolar transistors, resistors, capacitors and inductors
[video: buff.ly/3RCoez5]
2115
Glass Plank Road in Tiantai Mountain, Zhejiang, China allows the close-up observation of a waterfall from from a glass-bottomed walkway.
[📹 Kuaishou Top-6182: buff.ly/3hsssfV]
2116
White, painted stripes on the body protect skin from insect bites, the first time researchers have successfully shown this effect. Among indigenous peoples who wear body-paint, the markings thus provide a certain protection against insect-borne diseases ow.ly/BzbK30nmkN9
2117
The strange 1989 incident of the Mig-23 crash. Experiencing a technical problem, the soviet pilot ejected over Poland. The jet continued to fly for 900 km before running out of fuel and crashing into a house in Belgium, killing its occupant
[read more: buff.ly/3gIax0M]
2118
The Sleeping Hermaphroditus is an ancient marble sculpture depicting Hermaphroditus life size sculpted in 1620. The most striking detail is that the mattress and the pillow, made by Italian artist Gian Lorenzo Bernini, are made of marble too [read more: buff.ly/2IycQAc]
2119
Claudia Bueno’s installations are countless white line drawings meticulously intertwined and superimposed on glass panels. When illuminated, they mimic scores of nautilus spirals, coral, vines, and botanics that sway and throb in glowing masses [more: buff.ly/3sDOP1B]
2120
When permafrost melts in Siberia, it releases large amounts of methane which can blow holes like this one in the tundra [source, read more: buff.ly/2qkbhz7]
2121
Depending on the light the shape of a domestic cat’s pupil changes from vertical slit to almost fully round. Overall a cat’s pupils can expand by 135-fold and can perform like built-in night vision goggles. By contrast human pupils expand by a factor of 15 buff.ly/2J3Y6tZ
2122
The story of the Ericofon, the Ericsson one-piece plastic telephone: the first to incorporate the dial & handset into a single unit, considered one of the most significant industrial designs of the 20th century & sitting in the permanent collection of MOMA buff.ly/3pI4bCU
2123
The commercial aviation industry has changed a great deal since it first became an integral part of the way we travel. This is what the Interior of an airliner looked like in 1926
[read more: buff.ly/2t4rERY]
2124
«I would rather have questions that can't be answered than answers that can't be questioned»
— Richard Feynman
buff.ly/2HhV1by
#ThursdayThoughts
2125
Ultra-high-pressure water pumps operating water jet cutters are available from as low as 40,000 psi (280 MPa) up to 100,000 psi (690 MPa). This video by Cut in Half, shows a padlock being cut by a water jet
[full video: buff.ly/3jxDJ9V]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links