Devínska Kobyla (Slovak pronunciation: [ˈɟeʋiːnska ˈkɔbila]; Hungarian: Dévényi-tető; German: Thebener Kogel) is the highest peak in the Devín Carpathians, part of the Little Carpathians mountain range, and the highest point of Bratislava, the capital of Slovakia. It is located between the boroughs of Devínska Nová Ves, Devín and Dúbravka, close to the border with Austria. Its peak elevation is 514 m (1686.3 ft) AMSL and its treeless summit contains an abandoned military missile base (Slovak: Rádiotechnická hláska protivzdušnej obrany štátu) that is officially inaccessible to the public. Part of southern slopes of the massif has been a national natural reserve since 1965, featuring unique xerothermic forest-steppe flora and fauna with a total protected area of 101 hectares. From the flat top, a view opens of Bratislava, Austria, Hungary, the Danube and the Morava river. Hiking trails do not lead to the summit but instead to an accessible point with partial view underneath. ...

A Van de Graaff generator is an electrostatic generator which uses a moving belt to accumulate electric charge on a hollow metal globe on the top of an insulated column, creating very high electric potentials. It produces very high voltage direct current (DC) electricity at low current levels. It was invented by American physicist Robert J. Van de Graaff in 1929. The potential difference achieved by modern Van de Graaff generators can be as much as 5 megavolts. A tabletop version can produce on the order of 100 kV and can store enough energy to produce visible electric sparks. Small Van de Graaff machines are produced for entertainment, and for physics education to teach electrostatics; larger ones are displayed in some science museums. The Van de Graaff generator was originally developed as a particle accelerator for physics research, as its high potential can be used to accelerate subatomic particles to great speeds in an evacuated tube. It was the most powerful type of accelerator until the cyclotron was developed in the early 1930s. Van de Graaff generators are still used as accelerators to generate energetic particle and X-ray beams for nuclear research and nuclear...

The green peafowl or Indonesian peafowl (Pavo muticus) is a peafowl species native to the tropical forests of Southeast Asia and Indochina. It is the national bird of Myanmar. Formerly common throughout Southeast Asia, only a few isolated populations survive within Cambodia (mainly in the northern and eastern provinces) and adjacent areas of Vietnam. It has been listed as endangered on the IUCN Red List since 2009, primarily due to widespread deforestation, agriculture and loss of suitable habitat, severely fragmenting the species' populations and contributing to an overall decline in numbers. Due to their natural beauty, they are still sometimes targeted by the pet trade, feather collectors, and even by hunters for meat. They are a much-desired bird for private and home aviculturists, despite their rather high-maintenance care requirements (when compared to the more common and hardy Indian blue peafowl). Description Unlike the related Indian peafowl, the sexes of green peafowl are quite similar in appearance, especially in the wild. Both males and females have long upper...

Lidar (, also LIDAR, or LiDAR; sometimes LADAR) is an acronym of "light detection and ranging" or "laser imaging, detection, and ranging". It is a method for determining ranges by targeting an object or a surface with a laser and measuring the time for the reflected light to return to the receiver. It is sometimes called 3-D laser scanning, a special combination of 3-D scanning and laser scanning. LIDAR has terrestrial, airborne, and mobile applications.Lidar is commonly used to make high-resolution maps, with applications in surveying, geodesy, geomatics, archaeology, geography, geology, geomorphology, seismology, forestry, atmospheric physics, laser guidance, airborne laser swath mapping (ALSM), and laser altimetry. It is used to make digital 3-D representations of areas on the Earth's surface and ocean bottom of the intertidal and near coastal zone by varying the wavelength of light. It has also been increasingly used in control and navigation for autonomous cars and for the helicopter Ingenuity on its record-setting flights over the terrain of Mars....

The Marquess of Queensberry Rules, also known as Queensbury Rules, are a code of generally accepted rules in the sport of boxing. Drafted in London in 1865 and published in 1867, they were named so as the 9th Marquess of Queensberry publicly endorsed the code, although they were written by a Welsh sportsman named John Graham Chambers from Llanelli, Carmarthenshire. The code of rules on which modern boxing is based, the Queensberry rules were the first to mandate the use of gloves in boxing.The Queensberry Rules eventually superseded the London Prize Ring Rules (revised in 1853), and are intended for use in both professional and amateur boxing matches, thus separating it from the less-popular American Fair Play Rules, which were strictly intended for amateur matches. In colloquial use the term is sometimes used to refer to a sense of sportsmanship and fair play. History The boxing code was written by John Graham Chambers, a Welshman from Llanelli, Carmarthenshire, and drafted in London in 1865, before being published in 1867 as "the Queensberry rules for the sport of boxing". At the time, boxing matches were conducted...

Javanese cuisine (Indonesian: Masakan Jawa) is the cuisine of Javanese people, a major ethnic group in Indonesia, more precisely the province of Central Java, Yogyakarta and East Java. Definition Javanese cuisine refers exclusively to the cuisine of Javanese people, which is often brought to other regions and countries by Javanese diaspora or foreign descents who have lived in Java. There are several native ethnic groups who live on the island of Java (Sundanese, Madurese, Betawi, etc.) as well as other peoples of foreign descents. In Indonesian language, Javanese refers to people of Javanese ethnic background. Javanese cuisine is thought to be sweet, since this is the taste traditionally preferred in Yogyakarta. However, Javanese regions do not only include Yogyakarta. On the northern and northeastern of Central...

The Taj Mahal (; lit. 'Crown of the Palace') is an ivory-white marble mausoleum on the right bank of the river Yamuna in the Indian city of Agra. It was commissioned in 1631 by the Mughal emperor Shah Jahan (r. 1628–1658) to house the tomb of his favourite wife, Mumtaz Mahal; it also houses the tomb of Shah Jahan himself. The tomb is the centrepiece of a 17-hectare (42-acre) complex, which includes a mosque and a guest house, and is set in formal gardens bounded on three sides by a crenellated wall. Construction of the mausoleum was essentially completed in 1643, but work continued on other phases of the project for another 10 years. The Taj Mahal complex is believed to have been completed in its entirety in 1653 at a cost estimated at the time to be around ₹32 million, which in 2020 would be approximately ₹70 billion (about US $1 billion). The construction project employed some 20,000 artisans under the guidance of a board of architects led by Ustad Ahmad Lahauri, the emperor’s court architect...

In physiology, a stimulus is a detectable change in the physical or chemical structure of an organism's internal or external environment. The ability of an organism or organ to detect external stimuli, so that an appropriate reaction can be made, is called sensitivity (excitability). Sensory receptors can receive information from outside the body, as in touch receptors found in the skin or light receptors in the eye, as well as from inside the body, as in chemoreceptors and mechanoreceptors. When a stimulus is detected by a sensory receptor, it can elicit a reflex via stimulus transduction. An internal stimulus is often the first component of a homeostatic control system. External stimuli are capable of producing systemic responses throughout the body, as in the fight-or-flight response. In order for a stimulus to be detected with high probability, its level of strength must exceed the absolute threshold; if a signal does reach threshold, the information is transmitted...

Electricity generation is the process of generating electric power from sources of primary energy. For utilities in the electric power industry, it is the stage prior to its delivery (transmission, distribution, etc.) to end users or its storage (using, for example, the pumped-storage method). Electricity is not freely available in nature, so it must be "produced" (that is, transforming other forms of energy to electricity). Production is carried out in power stations (also called "power plants"). Electricity is most often generated at a power plant by electromechanical generators, primarily driven by heat engines fueled by combustion or nuclear fission but also by other means such as the kinetic energy of flowing water and wind. Other energy sources include solar photovoltaics and geothermal power. There are also exotic and speculative methods to recover energy, such as proposed fusion reactor designs which aim to directly extract energy from intense magnetic fields generated by fast-moving charged particles generated by the fusion reaction (see magnetohydrodynamics). Phasing out coal-fired power stations and eventually gas-fired power stations, or capturing...