[nice-round-tv]

Found on a concrete steele in front of a baranggay hall. For future generations...

[nice-round-tv]

Newton's corpuscular theory of light. Senior physics: Wave - particle duality. (1984)

[nice-round-tv]

Le Chatelier's principle. Reaction of hydrogen and iodine. Senior Chemistry: Equilibrium (1984)

[nemfrog]

"The Big Dipper as it is today (left) and as it will look in 50,000 years." Dream of stars. 1940.

Internet Archive

[nice-round-tv]

How the Big Dipper Has Changed—and Will Change—Over 200,000 Years

Wheel in the sky keeps on turning.

[nemfrog]

Radiation won't penetrate a lead wall. Biophysics. 1962.

Internet Archive

[nice-round-tv]

concrete or sand bags, two feet thick

[nice-round-tv]

Dynamic chemical equilibrium. Senior Chemistry: Equilibrium (1984)

[nice-round-tv]

There is an estimate of how big a star would be if it "dies". When a star like the Sun exhausts its hydrogen fuel, it will undergo a series of evolutionary changes that can ultimately lead to the collapse of its core. At a certain limit (The Chandrasekhar Limit) the star is so heavy that matter collapses into a black hole (with a radius of zero!). The Birth and Death of the Sun. Stellar Evolution and Subatomic Energy by George Gamow

[clawmarks]

Bird-life; being a history of the bird, its structure, and habits, together with sketches of fifty different species - Alfred Edmund Brehm - 1874 - via Internet Archive

[nice-round-tv]

#birds

[nice-round-tv]

Generated using DALL-E on OpenAI:

A sketch by Leonardo Da Vinci of the double helix structure of DNA, archival print

[ifnemfrog]

Mahatma Gandhi admiring his reflection in a pool like Narcissus. Al generated by Nemfrog. July 2, 2022.

[nice-round-tv]

The same prompt, but generated by DALL-E.

[nobrashfestivity]

Fascinating Experiments in Physics by François Cherrier, Sterling Publishing, NY, 1979 (originally published in France as Experiences de Physique Amusante, 1975)

scan by the wonderful and long gone stoppingoffplace

[nemfrog]

“The food cycle in nature.” Everyday Problems in Biology. 1939.

Internet Archive

[nice-round-tv]

“The burning of the body by O” in “Fourteen Weeks in Chemistry” by J. D. Steele. Internet Archive.

[nemfrog]

Phases of the ring of Saturn. A new astronomy for beginners. 1898.

Internet Archive

[nice-round-tv]

Saturn takes about 29 years to revolve around the sun, going through phases as seen from Earth.

[nemfrog]

“The earth’s shadows.” The beauty of the heavens. 1842.

Internet Archive

[nice-round-tv]

"Our planet is only a grain of dust floating in the immensity of Heaven." Astronomy for Amateurs by Camille Flammarion

[nice-round-tv]

"DNA is a metamorphic scriptorium, where life transcribes, by chance, whatever life has so far learned about immortality." -- from "The Xenotext (Book 1)" by Christian Bök