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Hinode
Hinode (/ˈhiːnoʊdeɪ/; Japanese: ひので, IPA: [çinode], Sunrise), formerly Solar-B, is a Japan Aerospace Exploration Agency Solar mission with United States and United Kingdom collaboration. It is the follow-up to the Yohkoh (Solar-A) mission and it was launched on the final flight of the M-V-7 rocket from Uchinoura Space Center, Japan on 22 September 2006 at 21:36 UTC (23 September, 06:36 JST). Initial orbit was perigee height 280 km, apogee height 686 km, inclination 98.3 degrees. Then the satellite maneuvered to the quasi-circular sun-synchronous orbit over the day/night terminator, which allows near-continuous observation of the Sun. On 28 October 2006, the probe's instruments captured their first images. The data from Hinode are being downloaded to the Norway , terrestrial Svalsat station, operated by Kongsberg a few kilometres west of Longyearbyen, Svalbard. From there, data was transmitted by Telenor through a fibre-optic network to mainland Norway at Harstad, and on to data users in North America, Europe and Japan.
  • 465
  • 15 Nov 2022
Topic Review
Hiranyakashipu
Hiranyakashipu (Sanskrit: हिरण्यकशिपु, "clothed in gold"; the name is said to depict one who is very much fond of wealth: hiranya "gold," kashipu "soft cushion") is an Asura from the Puranic scriptures of Hinduism. Hiranyakashipu's Younger Brother, Hiranyaksha was slain by Varaha, one of the Avatars of Vishnu. Angered by this, Hiranyakashipu decided to gain magical powers by performing a penance for Lord Brahma. He was subsequently killed by the Narasimha Avatara of Lord Vishnu. His tale depicts the futility of desiring power over others and the strength of God's protection over his fully surrendered devotees (in the case of his son Prahlada). Hiranyakashipu, according to legend, was the king of the daityas and had earned a boon from Brahma that made him virtually indestructible. He grew arrogant, thought he was God, and demanded that everyone worship only him. The story of Hiranyakashipu is in three parts. The first has to do with the curse of the Four Kumaras on the gatekeepers of Vaikuntha, Jaya and Vijaya, which causes them to be born as the daityas Hiranyakashipu and Hiranyaksha. The second part deals with Hiranyakashipu's penance to propitiate Brahma and gain a boon from him. The final part deals with his efforts to kill his son Prahlada (a devotee of Vishnu) and his subsequent death at the hands of Narasimha.
  • 7.6K
  • 15 Nov 2022
Topic Review
Historical Solar Eclipses and Implications in Celestial Mechanics
Solar and lunar eclipses are indeed the first astronomical phenomena which have been recorded since very early antiquity. Their periodicities gave birth to the first luni-solar calendars based on the Methonic cycle since the sixth century before Christ. 
  • 305
  • 23 Feb 2024
Topic Review
History of Measurement
The earliest recorded systems of weights and measures originate in the 3rd or 4th millennium BC. Even the very earliest civilizations needed measurement for purposes of agriculture, construction, and trade. Early standard units might only have applied to a single community or small region, with every area developing its own standards for lengths, areas, volumes and masses. Often such systems were closely tied to one field of use, so that volume measures used, for example, for dry grains were unrelated to those for liquids, with neither bearing any particular relationship to units of length used for measuring cloth or land. With development of manufacturing technologies, and the growing importance of trade between communities and ultimately across the Earth, standardized weights and measures became critical. Starting in the 18th century, modernized, simplified and uniform systems of weights and measures were developed, with the fundamental units defined by ever more precise methods in the science of metrology. The discovery and application of electricity was one factor motivating the development of standardized internationally applicable units.
  • 12.9K
  • 03 Nov 2022
Topic Review
History of Nanotechnology
The history of nanotechnology traces the development of the concepts and experimental work falling under the broad category of nanotechnology. Although nanotechnology is a relatively recent development in scientific research, the development of its central concepts happened over a longer period of time. The emergence of nanotechnology in the 1980s was caused by the convergence of experimental advances such as the invention of the scanning tunneling microscope in 1981 and the discovery of fullerenes in 1985, with the elucidation and popularization of a conceptual framework for the goals of nanotechnology beginning with the 1986 publication of the book Engines of Creation. The field was subject to growing public awareness and controversy in the early 2000s, with prominent debates about both its potential implications as well as the feasibility of the applications envisioned by advocates of molecular nanotechnology, and with governments moving to promote and fund research into nanotechnology. The early 2000s also saw the beginnings of commercial applications of nanotechnology, although these were limited to bulk applications of nanomaterials rather than the transformative applications envisioned by the field.
  • 2.0K
  • 17 Oct 2022
Topic Review
History of Solar System Formation and Evolution Hypotheses
The history of scientific thought about the Formation and evolution of the Solar System begins with the Copernican Revolution. The first recorded use of the term "Solar System" dates from 1704.
  • 2.7K
  • 22 Nov 2022
Topic Review
History of Wildlife Tracking Technology
The history of wildlife tracking technology involves the evolution of technologies that have been used to monitor, track, and locate many different types of wildlife. Many individuals have an interest in tracking wildlife, including biologists, scientific researchers, and conservationists. Biotelemetry is "the instrumental technique for gaining and transmitting information from a living organism and its environment to a remote observer".
  • 611
  • 10 Oct 2022
Topic Review
Holeum
Holeums are hypothetical stable, quantized gravitational bound states of primordial or micro black holes. Holeums were proposed by L. K. Chavda and Abhijit Chavda in 2002. They have all the properties associated with cold dark matter. Holeums are not black holes, even though they are made up of black holes.
  • 602
  • 28 Sep 2022
Topic Review
Holika
Holika (Sanskrit: होलिका) was a demoness in Hindu Vedic scriptures, who was burnt to death with the help of God Vishnu. She was the sister of King Hiranyakashipu and aunt of Prahlad. The story of Holika Dahan (Holika's death) signifies the triumph of good over evil. Holika is associated with the annual bonfire on the night before Holi, the Hindu festival of colors.
  • 2.9K
  • 29 Nov 2022
Topic Review
Holographic Optical Tweezers for Biomedical Applications
Holographic optical tweezers (HOT) is a programmable technique used for manipulation of microsized samples. In combination with computer-generation holography (CGH), a spatial light modulator reshapes the light distribution within the focal area of the optical tweezers. HOT can be used to realize real-time multiple-point manipulation in fluid, and this is useful in biological research.
  • 594
  • 27 Oct 2022
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