Pune: India’s largest telescope, the upgraded Giant Metrewave Radio Telescope (uGMRT), close to Narayangaon in Pune district.
| Photo Credit: PTI
Questions:
1. According to a classification of the International Telecommunications Union, the frequencies used for radio transmissions are divided into 12 ranges. The highest is THF, for ‘tremendously high frequency’, and is within the terahertz vary. The lowest is ELF. What does it stand for?
2. Name the mobile community technology that may use 0.3 terahertz frequency radiation to transmit knowledge.
3. The standard {hardware} and strategies used to supply microwave and infrared radiation – which lie on both aspect of the terahertz band – can’t be used to supply terahertz radiation of 0.1-30 THz. This requires new applied sciences. What is that this technological interval referred to as?
4. Name the sort of plastic that’s used to make lenses to focus or in any other case manipulate terahertz radiation. This kind is most popular as a result of the fabric has roughly equal refractive indices for terahertz and visual radiation, is clear to each, and mechanically strong.
5. This telescope represents the world’s largest ground-based astronomical endeavor, costing $1.5 billion to construct. Using 66 radio telescopes, it observes the cosmos within the submillimeter wavelengths – i.e. within the terahertz frequency vary. Name it.
Answers:
1. Extremely low frequency
2. 6G
3. Terahertz hole
4. Picarin
5. Atacama Large Millimeter/submillimeter Array (ALMA)
