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Current issue

ELEKTRO 11/2019 was released on November 6th 2019. Its digital version will be available on December 2nd 2019.

Topic: Electrical switchboards and switchboards technologies; substations

Main Article
The cause of mechanic vibration of synchronous mining engines by Palašer and its removal

SVĚTLO (Light) 5/2019 was released on September 16th 2019. Its digital version will be available immediately.

Professional organizations activities
International conference LIGHT (SVĚTLO) 2019 – 6th announcement
We participated in International commission on illumination CIE 2019 congress in Washington
Technical colloquium SLOVALUX 2019

Fairs and exhibitions
Inspire with boho styl and design of Far East at autumn fair FOR INTERIOR

SpaceX launches first 60 satellites of its internet network

24.05.2019 | Phys.org | www.phys.org

SpaceX launched a rocket carrying the first 60 satellites of its "Starlink" constellation, which is intended to provide internet from space and could one day number 12,000 satellites.

One of the company's Falcon 9 rockets blasted off without incident from Cape Canaveral in Florida around 10:30 pm (0230 GMT). An hour later, the rocket began to release the satellites at an altitude of 280 miles (450 kilometers). The satellites then had to separate and use their thrusters to take up their positions in a relatively low orbit of 340 miles (550 kilometers).

SpaceX satellites

That is slightly higher than the International Space Station, but well below the majority of terrestrial satellites, the highest of which sit in a geostationary orbit of 22,400 miles (36,000 kilometers). Each of the satellites weighs just 227 kilograms (500 pounds) and was built in-house in Redmond, near Seattle. Starlink will become operational once 800 satellites have been activated, which will require a dozen more launches.

Read more at Phys.org

Image Credit: SpaceX

-jk-