Indicator

Dial indicators are instruments used to correctly measure a small distance. They may also be known as a Dial gauge, Dial Test Indicator, or as a clock. They are named so because the measurement results are displayed in a overstated way by means of a dial. They may be used to check the dissimilarity in tolerance during the check process of a machined part, measure the deflection of a beam or ring under laboratory conditions, as well as many other situations where a small measurement needs to be registered or indicated.

An economic indicator is a statistic concerning the economy. The lighting system of a motor vehicle consists of lighting and signaling procedure mounted or integrated to the front, sides and rear of the vehicle. The purpose of this system is to present illumination for the driver to operate the vehicle safely after dark, to increase the visibility of the vehicle, and to display information about the vehicle's presence, position, size, direction of travel, and driver's intentions concerning direction and speed of travel.

Real estate

Real estate or fixed property is a legal term that encompasses land along with anything permanently affixed to the land, such as buildings. Real estate is often considered synonymous with real property, in contrast with personal property. However, for technical purposes, some people prefer to distinguish real estate, referring to the land and fittings themselves, from real property, referring to ownership rights over real estate. The terms real estate and real property are used mainly in common law, while civil law jurisdictions refer in its place to immovable property.

In law, the word real means relating to a thing, as well-known from a person. Thus the law broadly distinguishes between real possessions and personal property. The conceptual difference was between immovable property, which would transport title along with the land, and changeable property. In most advanced economies, the main source of capital used by individuals and small companies to purchase and get enhanced land and buildings is mortgage loans, bank loans for which the real property itself constitutes collateral.

Solar wind

The solar wind is a stream of charged particles which are expelled from the upper atmosphere of the sun. It consists mostly of high-energy electrons and protons that are able to get away the sun's gravity in part because of the high temperature of the corona and the high kinetic energy particles gain through a process that is not well understood at this time.

They are directly related to the solar wind, together with geomagnetic storms that can knock out power grids on Earth, auroras and the plasma tail of a comet always pointing away from the sun. While early models of the solar wind used primarily thermal energy to accelerate the material, by the 1960s it was clear that thermal hurrying alone cannot account for the high speed solar wind. Some additional acceleration mechanism is required, but is not presently known, but most likely relates to magnetic fields in the solar atmosphere. The solar wind is answerable for the overall shape of Earth's magnetosphere, and fluctuations in its speed, density, direction, and entrained magnetic field powerfully affect Earth's local space environment.

Birds

Birds evolved from theropod dinosaurs during the Jurassic, and the initial known bird is the Late Jurassic Archaeopteryx, Ranging in size from tiny hummingbirds to the huge Ostrich and Emu, there are between 9,000-10,000 known living bird species in the world, making them the most diverse class of terrestrial vertebrates. Modern birds are characterised by feathers, a beak with no teeth, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a light but strong skeleton. Most birds have forelimbs customized as wings and can fly, though the ratites and several others, particularly endemic island species, have also lost the ability to fly.Many species of bird undertake long distance annual migrations, and many more perform shorter more asymmetrical movements. Birds are social and communicate using visual signals and through calls and song, and contribute in social behaviors including cooperative hunting, helpful breeding, flocking and mobbing of predators. Birds are primarily communally monogamous, with meeting in extra-pair copulations being common in some species; other species have polygamous or polyandrous breeding systems. Eggs are regularly lay in a nest and incubated and most birds have an extended period of parental care after hatching.