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1451. Pád planetky nad Ruskem – Co se přesně stalo?

Creator:
Spurný, Pavel, Borovička, Jiří, and Petr Pravec
Format:
print
Type:
article, články, model:article, and TEXT
Subject:
Věda. Všeobecnosti. Základy vědy a kultury. Vědecká práce, akademie věd, academies of science, 12, and 00
Language:
Czech
Description:
On February 15, 2013, an asteroid entered Earth's atmosphere over Russia. With an estimated speed 18 km per second the meteor became a supetolide over the southern Ural region. It exploded in an air burst over Chelyabinsk Oblast creating small fragmentary meteorites and a shock wave. The Interplanetary Matter Department of the Astronomical Institute of the ASCR published a study that calculated the meteor's trajectory in the Solar System and in the Earth's atmosphere. and Pavel Spurný, Jiří Borovička a Petr Pravec.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

1458. Pamětní deska Ernsta Macha

Creator:
Gabriela Adámková
Format:
print, bez média, and svazek
Type:
article, zprávy, reports, model:article, and TEXT
Subject:
Věda. Všeobecnosti. Základy vědy a kultury. Vědecká práce, Mach, Ernst, 1838-1916, Jednota českých matematiků a fyziků., Česká fyzikální společnost, fyzika, aplikovaný výzkum, výroba, physics, applied research, anniversaries, 12, and 00
Language:
Czech
Description:
A bust of Ernst Mach was unveiled February 18, 2016. A plaque highlighting his work from 1867 to 1879 was also posted at Charles University on the exterior of the rector´s office. The bust, created by sculptor Jakub Vlček, shows a bullet leaving a gun producing a conical blast wave, as Mach´s widely-known photography shows. The project came at the initiative of Czech Physical Society and the Charles University Faculty of Mathematics and Physics. The plaque has been added to a list of historical places by European Physical Society (EPS). and Gabriela Adámková.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public