How did the ancient Chinese used to determine the standard length used bell?

In ancient China, the benchmark measure of length served as a special bell, tuned to a given pitch. In another adaptation of the stretched string, so that it corresponded to the sound of a given height, and the resulting length of the string taken as standard.
What is the function, in addition to the direct purpose, performed theater fans?
Among the variety of fans there were special theater fans, who in addition to its direct purpose serves as Assistant. For fans applied for the audience the scene from the play, program ideas, excerpts from plays. And the actress on their fans sometimes recorded complex texts.

What kind of aircraft used the troops of Peter I to capture the Swedish fortresses?

The word "plane" existed long before the advent of aviation. For example, Blockhouse and From 1903 issue describes the capture of the troops of Peter I the fortress Note burg: "... Flotilla blocked it from Lake Ladoga, on a plane arranged the connection between the two shores of the Neva. Here, the word plane is due to self-propelled steam driven power of river stream. In the same encyclopedia is a different interpretation: airplane - hand loom with a device for more convenient shuffling shuttle. Finally, the so called magical flying objects from the fairy tales, for example, a flying carpet.


What explains the special way of dumping people - face down - in many archaeological finds?

Archaeologists sometimes find the graves, face down. It was long thought that this situation was caused by random factors. Careful study of this issue on the basis of examples of such graves in different parts of the world from different historical periods showed that they all have one thing in common: they buried face down those people who are not respected and wanted to humiliate, even after death.

How weigh bacteria in the intestines of man?

Human intestine normally contains about one kilogram of bacteria. The number of cells of these bacteria on the order exceeds the number of cells in the human body.

Where to go die African elephants?

For a long time there was a legend, if the elephants go to die in a mysterious and inaccessible elephant graveyard. It arose because in the African savannah and jungle, no one found the tusks of dead elephants. Only in the 20 century, it was found that the tusks of African porcupines eat, so trying to quench the mineral starvation.

Which reptiles are able to run on the surface of the water?

Lizards of the genus basilisks are able to run on the surface of the water, holding back due to frequent attacks of the hind legs.

What happened to the inventor of roller skates on the first of their demonstration?

The inventor of roller skates considered to be the Belgian Jean-Joseph Merlin. He showed them at a London-masquerade ball in 1760, riding to the public in expensive shoes with small metal wheels, and playing the violin. However, these videos were still so imperfect that Merlin could not slow down in time and crashed into a wall, breaking a very expensive mirror.