Summary

HandWiki is the world's largest wiki-style encyclopedia dedicated to science, technology and computing. It allows you to create and edit articles as long as you have external citations and login account. In addition, this is a content management environment that can be used for collaborative editing of original scholarly content, such as books, manuals, monographs and tutorials.

Expand All
Entries
Topic Review
Cydonia (Region of Mars)
Cydonia (/sɪˈdoʊniə/, /saɪˈdoʊniə/) is a region on the planet Mars that has attracted both scientific and popular interest. The name originally referred to the albedo feature (distinctively coloured area) that was visible from Earthbound telescopes. The area borders plains of Acidalia Planitia and the Arabia Terra highlands. The area includes the regions: "Cydonia Mensae", an area of flat-topped mesa-like features, "Cydonia Colles", a region of small hills or knobs, and "Cydonia Labyrinthus", a complex of intersecting valleys. As with other albedo features on Mars, the name Cydonia was drawn from classical antiquity, in this case from Kydonia, a historic polis (or "city-state") on the island of Crete. Cydonia contains the "Face on Mars", located about halfway between Arandas Crater and Bamberg Crater.
  • 6.9K
  • 25 Oct 2022
Topic Review
LPC (Programming Language)
LPC (short for Lars Pensjö C) is an object-oriented programming language derived from C and developed originally by Lars Pensjö to facilitate MUD building on LPMuds. Though designed for game development, its flexibility has led to it being used for a variety of purposes, and to its evolution into the language Pike. LPC syntax places it in the family of C-like languages, with C and C++ its strongest influences.
  • 1.5K
  • 25 Oct 2022
Topic Review
Philosophy of Experience
The Upanishadic philosophy of experience expounded by Gaudapada is based on the cryptic references made by the sage of the Mandukya Upanishad to the experience of the individual self of its own apparent manifestations in the three fundamental states of consciousness, and to the Fourth known as Turiya. Turiya is identified with “that goal which all the Vedas declare” - सर्वे वेदा यत् पदमानन्ति (Katha Upanishad I.ii.15), and whose characteristics are not dissimilar to those of the non-dual Brahman (Mandukya Upanishad 7).
  • 918
  • 25 Oct 2022
Topic Review
The Svedberg Laboratory
The Svedberg Laboratory (TSL) is a university facility, based in Uppsala, Sweden.The activities at TSL are based around the particle accelerator Gustaf Werner cyclotron. The main activity is proton therapy for the treatment of cancer, based on an agreement between the Oncology clinic at Uppsala University Hospital and Uppsala University.Beamtime not used for proton therapy is devoted to commercial neutron and proton irradiation projects, mainly for Radiation testing.There is also some time for basic (academic) research and in this case the experiments should be associated to Uppsala University or to EC projects. TSL is supported by the European Community and belong to the EC projects ERINDA, SkyFlash and CHANDA.
  • 964
  • 27 Oct 2022
Topic Review
Snap (Package Manager)
Snap is a software packaging and deployment system developed by Canonical for operating systems that use the Linux kernel. The packages, called snaps, and the tool for using them, snapd, work across a range of Linux distributions and allow upstream software developers to distribute their applications directly to users. Snaps are self-contained applications running in a sandbox with mediated access to the host system. Snap was originally released for cloud applications but was later ported to work for Internet of Things devices and desktop applications too.
  • 1.2K
  • 25 Oct 2022
Topic Review
Tachyglossus
The short-beaked echidna (Tachyglossus aculeatus) is one of four living species of echidna and the only member of the genus Tachyglossus. It is covered in fur and spines and has a distinctive snout and a specialized tongue, which it uses to catch its insect prey at a great speed. Like the other extant monotremes, the short-beaked echidna lays eggs; the monotremes are the only living group of mammals to do so. The short-beaked echidna has extremely strong front limbs and claws, which allow it to burrow quickly with great power. As it needs to be able to survive underground, it has a significant tolerance to high levels of carbon dioxide and low levels of oxygen. It has no weapons or fighting ability but repels predators by curling into a ball and deterring them with its spines. It lacks the ability to sweat and cannot deal with heat well, so it tends to avoid daytime activity in hot weather. It can swim if needed. The snout has mechanoreceptors and electroreceptors that help the echidna to detect its surroundings. During the Australia n winter, it goes into deep torpor and hibernation, reducing its metabolism to save energy. As the temperature increases, it emerges to mate. Female echidnas lay one egg a year and the mating period is the only time the otherwise solitary animals meet one another; the male has no further contact with the female or his offspring after mating. A newborn echidna is the size of a grape but grows rapidly on its mother's milk, which is very rich in nutrients. Baby echidnas eventually grow too large and spiky to stay in the pouch and, around seven weeks after hatching, are expelled from the pouch into the mother's burrow. At around six months of age, they leave the burrow and have no more contact with their mothers. The species is found throughout Australia, where it is the most widespread native mammal, and in coastal and highland regions of eastern New Guinea, where it is known as the mungwe in the Daribi and Chimbu languages. It is not threatened with extinction, but human activities, such as hunting, habitat destruction, and the introduction of foreign predatory species and parasites, have reduced its distribution in Australia.
  • 1.8K
  • 25 Oct 2022
Topic Review
Low-Functioning Autism
Low-functioning autism (LFA) is autism with low functioning levels. Symptoms may include impaired social communications or interactions, bizarre behavior, and lack of social or emotional reciprocity. Sleep problems, aggressiveness, and self-injurious behavior are also possible consequences. LFA is not a recognized diagnosis in the DSM-5 or ICD-10, neither of which subdivides autism based on intellectual capabilities. Synonyms include Kanner's syndrome, Kannerian autism and classic autism. The terms overlap with severe autism and profound autism (as opposed to "mild" or "moderate"), which may be vaguely defined and not necessarily correlate with severe and profound levels of intellectual disability (where profound is the most severe level).
  • 1.7K
  • 27 Oct 2022
Topic Review
Compounds of Thorium
Many compounds of thorium are known, this is because thorium and uranium are the most stable and accessible actinides and are the only actinides that can be studied safely and legally in bulk in a normal laboratory. As such, they have the best-known chemistry of the actinides, along with that of plutonium, as the self-heating and radiation from them is not enough to cause radiolysis of chemical bonds as it is for the other actinides. While the later actinides from americium onwards are predominantly trivalent and behave more similarly to the corresponding lanthanides, as one would expect from periodic trends, the early actinides up to plutonium (thus including thorium and uranium) have relativistically destabilised and hence delocalised 5f and 6d electrons that participate in chemistry in a similar way to the early transition metals of group 3 through 8: thus, all their valence electrons can participate in chemical reactions, although this is not common for neptunium and plutonium.
  • 2.4K
  • 25 Oct 2022
Topic Review
Sati (Buddhism)
Sati (from Pali: सति; Sanskrit: स्मृति smṛti) is mindfulness or awareness, a spiritual or psychological faculty (indriya) that forms an essential part of Buddhist practice. It is the first factor of the Seven Factors of Enlightenment. "Correct" or "right" mindfulness (Pali: sammā-sati, Sanskrit samyak-smṛti) is the seventh element of the Noble Eightfold Path.
  • 12.3K
  • 25 Oct 2022
Topic Review
Balloon (Aeronautics)
In aeronautics, a balloon is an unpowered aerostat, which remains aloft or floats due to its buoyancy. A balloon may be free, moving with the wind, or tethered to a fixed point. It is distinct from an airship, which is a powered aerostat that can propel itself through the air in a controlled manner. Many balloons have a basket, gondola, or capsule suspended beneath the main envelope for carrying people or equipment (including cameras and telescopes, and flight-control mechanisms).
  • 3.0K
  • 27 Oct 2022
  • Page
  • of
  • 863
>>