Telescopes
A telescope is an optical instrument using lenses, curved mirrors, or a combination of both to observe distant objects, or various devices used to observe distant objects by their emission, absorption, or reflection of electromagnetic radiation. The first known practical telescopes were refracting telescopes invented in the Netherlands at the beginning of the 17th century, by using glass lenses. They were used for both terrestrial applications and astronomy. The reflecting telescope, which uses mirrors to collect and focus light, was invented within a few decades of the first refracting telescope. In the 20th century, many new types of telescopes were …
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Laws.Africa · 7 March 2022 English
[optics]; apparatus and instruments for astronomy; telescopes; USB cables for cellphones; telephone wires; …
Laws.Africa · 16 July 2021 English
slide projectors, overhead projectors, screens, telescopes and microscopes, apparatus and instruments …
Laws.Africa · 28 May 2021 English
unanimity to be amended. 2. Access to time on SKA telescopes and other SKA resources shall be in accordance …
Laws.Africa · 21 May 2020 Arabic
cystoscope 22,5 Fr à onglet d'Albarran (2 unités) ; — télescopes de 25° et de 0° (4 unités) ; — urétérotomes … instruments de travail, lames) (2 unités) ; — télescopes de 0-30° et de 70° ; JOURNAL OFFICIEL DE LA REPUBLIQUE … percutanée : — cystoscope 22,5 Fr (2 unités) ; — télescopes de 25° et de 0° (4 unités). • Set pour Néphrotomie … néphroscope de Honenfelner (2 unités) avec 2 télescopes chacun de 0° et 6°, de calibre 24 et 17 (pinces …
Laws.Africa · 19 January 2020 Arabic
microfilms - - - Autres - - - Miroirs, montés, pour télescopes, appareils de projection, microscopes, instruments …
Laws.Africa · 5 July 2019 English
electric; Accumulators, electric, for vehicles; Telescopes; Chargers for electric batteries; Cell phones; …
Laws.Africa · 29 May 2019 English
directly or indirectly detected by the optical telescopes located within the Sutherland Core Astronomy …
Laws.Africa · 7 September 2018 English
In Part “A”. satellite navigational apparatus; telescopes; junction ; eee. | > boxes(electricity); plugs …
Laws.Africa · 25 July 2018 English
directly or indirectly detected by the optical telescopes located within the Sutherland Core Astronomy … aastronomie en Sutherland 201. Astronomers use telescopes to study extremely distant and faint cosmic objects … study such faint sources, astronomers build their telescopes in the darkest and clearest places that they … variety of smaller South African and international telescopes and several facilities for geophysical research …
Laws.Africa · 3 April 2018 English
testing instruments and machines; binoculars, telescopes, magnifying glasses; optical goods, spectacles …
