. As of now, information technology is the king of space — and both commercial and government customers are driving demand. Understandably, customers want to quickly and successfully reach orbit for the cheapest price. Reliability and speed aside, price is commonly measured in $/kilogram (kg)....
Putting the elements in order would prove quite difficult. At the time, there were 63 known chemical elements, each with an atomic weight calculated using Avogadro's hypothesis, which states that equal volumes of gases, when kept at the sametemperatureand pressure, hold the same number of molec...
A new interest in electric current began with the invention of the battery. Luigi Galvani had noticed (1786) that a discharge of static electricity made a frog's leg jerk. Consequent experimentation produced what was a simple electron cell using the fluids of the leg as an electrolyte and the...
Upgrade of a laboratory x-ray diffractometer to extend its operating range towards soft energies The optical properties of x-ray mirror samples are commonly measured using diffractometers based on laboratory sources; like the Bede D1 diffractometer ope... G Rivolta,S Basso,M Civitani,... 被引...
In general, a stronger interaction was observed for the anthracene guest with electron-donating groups, although steric and 蟺-conjugation factors cannot be completely excluded. The photophysical responses of complex 1 upon addition of various PAHs were measured by UV/Vis and emission titration studies...
[the material’s interior]. we were really, really shocked when the magnetization we measured in the sample started showing wiggles that are characteristic of an electron executing orbits. we see these electrons that travel really long orbits, and they’re coming from the bulk. but the bulk ...
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. At the turn of the 2nd millennium BC, the necropolis continued to play a great role in the social life of the URV communities (Gallay1995). During the Early Bronze Age (EBA) (2200–1600 BC), the BB and FN monuments became the objects of an ancestor cult, consisting of ritual ...
The movements of electrons inside atoms and molecules are so rapid that they are measured in attoseconds – an almost incomprehensibly short unit of time. “An attosecond is to one second as one second is to the age of the universe,” the committee explained. ...
The study did not explain how he measured a rat's waist and inseam. Charles Foster, a fellow at the University of Oxford in the United Kingdom, won for literally living like an animal. He spent months mimicking a badger, an otter, a fox, a deer and a bird in an attempt to see th...