Frostrich

Hoar frost melting on grass in  France Frost  is the coating or deposit of ice that may form in  humid  air in cold conditions, usually overnight. [1]  In temperate climates it most commonly appears as fragile white crystals or frozen dew drops near the ground, but in cold climates it occurs in a greater variety of forms. [2]  Frost is composed of delicate branched patterns of ice crystals formed as the result of  fractal  process development. Frost is known to damage crops or reduce future crop yields, therefore farmers in those regions where frost is a problem often invest substantial means to prevent its formation. Introduction Edit Frost forms when the temperature of a solid surface in the open cools to below the freezing point of water and for the most clearly crystalline forms of frost in particular, below the  frost point  in still air. [3]  In most temperate countries such temperatures usually are the result of heat loss by radiation at night, so those type

The  Taj Mahal  ( / ˌ t ɑː dʒ   m ə ˈ h ɑː l / , more often  / ˈ t ɑː ʒ / ; [3]  meaning Crown of the Palace [4] ) is an ivory-white marble  mausoleum  on the south bank of the  Yamuna  river in the Indian city of  Agra . It was commissioned in 1632 by the  Mughal emperor ,  Shah Jahan  (reigned 1628–1658), to house the tomb of his favourite wife,  Mumtaz Mahal . The tomb is the centrepiece of a 17-hectare (42-acre) [5]  complex, which includes a  mosque  and a guest house, and is set in formal gardens bounded on three sides by a  crenellated  wall. Taj Mahal Location Agra ,  Uttar Pradesh , India Coordinates 27°10′30″N   78°02′31″E Height 73 metres (240 ft) Built 1632–53 [1] Architect Ustad Ahmad Lahauri Architectural style(s) Mughal architecture Visitors 7–8 million [2]  (in 2014) UNESCO World Heritage Site Type Cultural Criteria (i) Designated 1983   (7th  session ) Reference no. 252 State Party India Region Asia-Pacific Location of Agra within India

The  Louvre  in  Paris . The  Uffizi Gallery , the most visited museum in  Italy  and an important museum in the world. View toward the  Palazzo Vecchio , in  Florence . The  British Museum  in  London . A  museum  ( / m juː ˈ z iː əm /   mew- ZEE -əm ; plural  musea  or  museums ) is an institution that  cares for  (conserves) a  collection  of artifacts and other objects of  artistic ,  cultural ,  historical , or  scientific  importance. Many public museums make these items available for public viewing through  exhibits  that may be permanent or temporary. [1]  The largest museums are located in major cities throughout the world, while thousands of local museums exist in smaller cities, towns and rural areas. Museums have varying aims, ranging from serving researchers and specialists to serving the general public. The goal of serving researchers is increasingly shifting to serving the general public. There are many types of museums, including art museums, natur

A  microscope  (from the  Ancient Greek :  μικρός ,  mikrós , "small" and  σκοπεῖν ,  skopeîn , "to look" or "see") is an  instrument  used to see objects that are too small to be seen by the naked eye.  Microscopy  is the science of investigating small objects and structures using such an instrument.  Microscopic  means invisible to the eye unless aided by a microscope. Microscope Uses Small sample observation Notable experiments Discovery of  cells Related items Optical microscope   Electron microscope 18th-century microscopes from the  Musée des Arts et Métiers ,  Paris There are many types of microscopes, and they may be grouped in different ways. One way is to describe the way the instruments interact with a sample to create images, either by sending a beam of light or electrons to a sample in its optical path, or by scanning across, and a short distance from, the surface of a sample using a probe. The most common microscope (and the f