WAn astronaut propulsion unit is used to move an astronaut relative to the spaceship during a spacewalk. The first astronaut propulsion unit was the Hand-Held Maneuvering Unit (HHMU) used on Gemini 4.
WContact lenses, or simply contacts, are thin lenses placed directly on the surface of the eyes. Contact lenses are ocular prosthetic devices used by over 150 million people worldwide, and they can be worn to correct vision or for cosmetic or therapeutic reasons. In 2010, the worldwide market for contact lenses was estimated at $6.1 billion, while the US soft lens market was estimated at $2.1 billion. Multiple analysts estimated that the global market for contact lenses would reach $11.7 billion by 2015. As of 2010, the average age of contact lens wearers globally was 31 years old, and two-thirds of wearers were female.
WIn computer science, the dining philosophers problem is an example problem often used in concurrent algorithm design to illustrate synchronization issues and techniques for resolving them.
WThe Gaia hypothesis, also known as the Gaia theory, Gaia paradigm, or the Gaia principle, proposes that living organisms interact with their inorganic surroundings on Earth to form a synergistic and self-regulating, complex system that helps to maintain and perpetuate the conditions for life on the planet.
WThe Hand-Held Maneuvering Unit (HHMU), also known as the maneuvering gun, or informally as "the zip gun", was first astronaut propulsion unit. It was first used by astronaut Ed White during the first American "spacewalk", on Gemini 4, June 3, 1965. Different models of HHMU were present on Gemini 4, 8, 10, and 11, but were only used on Gemini 4 and 10. It was also used aboard Skylab.
WThe IBM 2741 is a printing computer terminal that was introduced in 1965. Compared to the teletypewriter machines that were commonly used as printing terminals at the time, the 2741 offers 50% higher speed, much higher quality printing, quieter operation, interchangeable type fonts, and both upper and lower case letters.
WIndane is a subsidiary of Indian Oil Corporation which is under the ownership of Ministry of Petroleum and Natural Gas of the government of India. It is the world's second largest government-owned subsidiary responsible for manufacturing LPG. The brand was conceived in 1964 to bring modern cooking to Indian kitchens. The first Indane LPG connection was released on 22 October 1965 at Kolkata. Indane serves more than 130 million families through a network of 12500 distributors. 27% of its customers reside in semi-urban or rural markets and every second LPG cooking gas connection in India is that of Indane. The sales network is backed by 47 Indane Area Offices. The brand has been awarded the title of "Superbrand" by Superbrand India.
WMedium Atomic Demolition Munition (MADM) was a tactical nuclear weapon developed by the United States during the Cold War. It was an Atomic demolition munition, a combat engineering device for demolition of structures and for battlefield shaping. The device contained W45 warhead, with an estimated yield of 0.5 to 15 kilotonnes of TNT. Each MADM weighed 391 pounds (177 kg) in its transportation container. They were deployed between 1962 and 1986.
WMoore's law is the observation that the number of transistors in a dense integrated circuit (IC) doubles about every two years. Moore's law is an observation and projection of a historical trend. Rather than a law of physics, it is an empirical relationship linked to gains from experience in production.
WA space rendezvous is a set of orbital maneuvers during which two spacecraft, one of which is often a space station, arrive at the same orbit and approach to a very close distance. Rendezvous requires a precise match of the orbital velocities and position vectors of the two spacecraft, allowing them to remain at a constant distance through orbital station-keeping. Rendezvous may or may not be followed by docking or berthing, procedures which bring the spacecraft into physical contact and create a link between them.
WSurfers Paradise Meter Maids are bikini-clad women who operate in Surfers Paradise — a surfing, entertainment and tourism centre on the Gold Coast of Queensland, Australia. Unlike other meter maids, who issue parking tickets to motorists when they overstay, Gold Coast meter maids put money into parking meters which might otherwise expire, preventing vehicle owners from incurring a fine. After the introduction of pay-and-display parking meters they took on the task of explaining to motorists how the machines work.