Nature News

From the archive

50 years in the past

With the expansion of geostationary orbit-based telecommunications, there may be rising concern that satellites will probably be so cluttered towards each other that they’re interfering with one another … An article within the newest concern of the Proceedings of the USA. Establishment of Electrical Engineers … consists of a calculation of the capability of the equatorial orbit to build up geostationary communication satellites. Their primary conclusion is that the capability of the equatorial orbit, with the present provisions, might be restricted to about 2,000 phone circuits for every diploma of orbit. In observe, this equates to about one satellite tv for pc over 4 levels of orbit, implying that it’ll require little or no growth earlier than elements of the equatorial orbit – over the Atlantic and America , for instance – don’t get overloaded.

From Nature August 16, 1969

100 years in the past

The conflict has been on the origin of nice developments in lots of branches of science … [C]dropping consideration has been paid to marine physics … particularly … underwater acoustics … The singular property that distinguishes a submarine from different vessels is its potential to make itself invisible when 39 he’s pursued or throughout the search and assault of his prey. Stripped of this energy, it’s an especially weak boat … The acoustic methodology of detection of a submerged submarine … proved to be rather more delicate and presents a for much longer autonomy than all the opposite strategies. The devices used for this goal are known as hydrophones. … [T]Enhanced hydrophones developed for the conflict service ought to considerably scale back the chance of collisions and sinking.

From nature August 14, 1919

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