1676
This video uses a live imaging technique to visualize mouse T-cells killing mouse tumor cells. Cells were imaged for over 6 hours at a frequency of 1 image every 20 seconds
[source, read more: buff.ly/2WToyNK]
1677
Just Room Enough Island lies on the Saint Lawrence River between Heart Island and Imperial Isle, close to the US border with Canada. It is known for being the smallest inhabited island, which appears to be around 3,300 square feet (310 m²)
[read more: buff.ly/3FaiE1E]
1678
In 1862 Charles Darwin received a flower from Madagascar with the nectar located in an extremely deep crevasse. He predicted the existence of a moth with an extraordinarily long tongue to reach the nectar. Xanthopan morganii was discovered 150 years later ow.ly/3hmm50B6Brz
1679
Our Sun is a huge, massive object, containing about 99.8% of all the matter in our Solar System. It has a mass of 2.192 · 10²⁷ tons, 333,000 times that of the Earth, and it converts 600 million tons of hydrogen into 596 million tons of helium every second ow.ly/Y3qw30np4FN
1680
HoloLamp creates a projected tangible interface on each restaurant table-top, so that each customer can select and view the dishes in full size and 3D, and finally place the order while remaining seated
[video: buff.ly/2pXyCWS]
1681
Born in 1954, Chris Evans is one of the artists who created matte paintings for many iconic movies. This is how he fooled us in the original Star Wars trilogy (and in other movies) [read more: buff.ly/3sO1aAC]
1682
The decisive moment when a kingfisher dives in water to hunt fish, has been superbly captured in this award winning photo by Chris Chambers [source: buff.ly/2GUCgGY]
1683
The Río Tinto is a river in southwestern Spain which has a unique red and orange colour derived from its chemical makeup that is extremely acidic (pH 2) and with very high levels of iron and heavy metals
[read more: buff.ly/3kHBVMC]
1684
Reddit user u/harpalss made this chart that shows the hours of daylight as a function of day of the year and latitude [source: buff.ly/33E1d5T-] [Equation to calculate the hours of daylight for a given day and latitude: buff.ly/3bNkqaJ-]
1685
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]
1686
When you cast a visible light shadow you also cast a thermal shadow. But while the former disappear when you walk away, an infrared thermography shows you the latter staying on the wall.
[source: buff.ly/3RsB6r4]
1687
The story of Elizabeth Jane Cochrane (aka Nellie Bly), the journalist that wanted to recreate in real life the famous novel "Around the world in 80 days". She succeded with eight days to spare and met Jules Verne to interview him
[read more: buff.ly/3HkYVf2]
1688
A pair of peregrine falcons mates for life. The courtship flight includes a mix of aerial acrobatics in which the male passes prey it has caught to the female in mid-air
[read more: buff.ly/3Tn1jcg]
[📹 Tohid Azimi: buff.ly/3AvCQZK]
1689
It looks like a little hippopotamus that can change its colour... A hypnopotamus? It's a Metasepia pfefferi, or Pfeffer's flamboyant cuttlefish, one of the most intriguing species of cephalopods
[source, Aquarium of the Pacific: buff.ly/2Jn8wbh]
1690
Using a drone, brothers photographers JP and Mike Andrews, capture natural and human made scenes across the world, stumbling upon unique patterns that can only be discerned from above, like this cargo ship's shadow [this and more pictures, here: buff.ly/2zZH7pz]
1691
Polyethylene glycol is a liquid that can pour itself out of a container due to it’s very long chains of linked molecules buff.ly/2pPrqLW [source of the gif, YT's The Action Lab: buff.ly/2BEBWM8]
1692
Flying squid has been observed to engage in behaviors that prolong the time it remains in the air, making it more akin to actual flight than just gliding. This photo by @whale_nerd is one beautiful photographic evidence
[read more: buff.ly/3zYrwEJ]
1693
How a swarm of robots is able to extract vehicles from confined spaces with delicate handling, swiftly and in any direction [source, full video: buff.ly/2T48kPa]
1694
The dead leaf mantis is a predator, but also prey to many other predators. To scare them off, this mantis can assume a 'deimatic display', using its wings and its front legs to create the illusion of a toothed mouth
[read more: buff.ly/3fhQ4zk]
1695
In 1960, David Latimer put some compost, water, and plant seeds into a large glass jar and sealed it up. And it’s been growing like that ever since, thriving in its own, self-contained ecosystem, save for when Latimer opened the bottle to water it in 1972 buff.ly/2UcQJ8y
1696
Many animals, such as diving hawks or polar bears, use nictitating membranes to protect their eyes from water or snow blindness, but few are as spectacularly patterned as that of the red-eyed tree frog. Plus, they don't let those big eyes always covered! buff.ly/2GIaajD
1697
This video shows a white blood cell chasing and eating a bacterium. To be more specific: the video shows a neutrophil chasing a staphylococcus aureus during phagocytosis process
[📹David Rogers: buff.ly/3FOyQY9]
1698
This is how two colliding galaxies interact and merge into a single elliptical galaxy over a period spanning two billion years of evolution, in a simulation made by the Advanced Visualization Laboratory (AVL) at NCSA
[read more: buff.ly/3vCi2eH]
1699
An Archimedes' screw is a machine used for transferring water from a low-lying body of water into irrigation ditches. Greek philosopher Archimedes first described it around 234 BCE [source: buff.ly/3pMIFOG-] [read more: buff.ly/3GuFvVA-]
1700
Have you ever seen a comet from space? This time-lapse video shows comet NEOWISE as viewed from the International Space Station (ISS) on July 5, 2020 made from 340 photos as the ISS passed over Uzbekistan and Central Asia [source, NASA: buff.ly/3n9KDqq]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links