The Great Trigonometric Survey of India gave the height of Mt Everest at 29,002 ft, while figures by modern satellites shows 29,028 ft, the closeness of the two figures shows the accuracy of the trigonometric method.

Soda ash raises the pH in water

If the Sun were to suddenly become a black hole, but not lose any mass. The planets would still orbit normally.

The ruler and compass construction of a regular 17-gon is: Let OA and OB be perpendicular radii of a circle. Let IO be one quarter of the way from O to B, and make angle OIE one quarter of angle OIA. Make angle EIF equal to 45 degrees. The circle with diameter AF cuts OB at K. The circle with center E that passes through K cuts AO at N[sub]3[/sub] and N[sub]5[/sub]. Draw N[sub]3[/sub]P[sub]3[/sub] and N[sub]5[/sub]P[sub]5[/sub] perpendicular to OA. Then P[sub]3[/sub] and P[sub]5[/sub] are the third and fifth vertices of the regular 17-gon. Bisect angle P[sub]3[/sub]OP[sub]5[/sub]to locate P[sub]4[/sub] Then mark off successive edges at distances P[sub]4[/sub]P[sub]5[/sub] along the circle to locate all other vertices.

[Url=https://images.app.goo.gl/trKaWRbydvr8poRi9]The visual reference[/url]

Before the invention of the printing press and subsequent legislation to regulate the new industry, copyright law did not exist. You could take an existing story (King Arthur, for instance) and change it as much as you wanted and people wouldn't bat an eyelash. Of course, said story surviving to now would depend entirely on your literacy and the whims of fate, but you wouldn't get in any legal trouble for doing so. Intellectual property as a concept is a very new idea in human history.

If the Sun's fusion reactions were to be stopped this instant, it would not even start to dim or cool for hundreds of thousands of years.

Pigeons hold grudges

Saffron and colchicine both come from crocuses.

The temperature of a black hole is Plank's constant times c cubed divided by 8π times Newton's gravitational constant, Boltzmann's constant and the mass of the black hole.

In practical terms, the equation gives a black hole of a few solar masses a temperature of a millionth of a degree above absolute zero.

The worst music career has been for the author of the Voyager records, Anthony Michael Morena. Only two were made originally, and both were quite literally thrown out of the Earth.

You can't swallow 4 times in a row one after another. I did 3 no problem but the 4th took me so.much.effort :p

Ping me if you try this!

If a single transistor were a square foot, a full IC chip would cover an area roughly the size of an average city.