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The in-situ atomic-resolution environmental transmission electron microscope (ETEM) was created by Pratibha Gai in 2009. This microscope allows for visualisation of chemical reactions at the atomic scale. Dame Gai decided not to patent her device, the culmination of 20 years' work, in order to further the advancement of science. Photocatalysis
Antonie van Leeuwenhoek (1632–1723). The field of microscopy (optical microscopy) dates back to at least the 17th-century.Earlier microscopes, single lens magnifying glasses with limited magnification, date at least as far back as the wide spread use of lenses in eyeglasses in the 13th century [2] but more advanced compound microscopes first appeared in Europe around 1620 [3] [4] The ...
She was using a magnifying glass to see the tiny details, and her drawing so impressed him that he immediately persuaded her father to buy her a microscope. A compound microscope made by Andrew Ross (model 112) was purchased for £48 12s 8d. [6] [7] This was the beginning of a lifelong passion.
The optical microscope, also referred to as a light microscope, is a type of microscope that commonly uses visible light and a system of lenses to generate magnified images of small objects. Optical microscopes are the oldest design of microscope and were possibly invented in their present compound form in the 17th century.
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Compound microscopes first appeared in Europe around 1620. [2] [3] The actual inventor of the compound microscope is unknown although many claims have been made over the years. These include a dubious claim that Dutch spectacle-maker Zacharias Janssen invented the compound microscope and the telescope as early as 1590.
This is a historical list dealing with women scientists in the 20th century. During this time period, women working in scientific fields were rare. Women at this time faced barriers in higher education and often denied access to scientific institutions; in the Western world, the first-wave feminist movement began to break down many of these ...
It is a matter of taste whether one includes the lone pair in a drawing. Lone pairs of electrons are more common for depictions that emphasize bonding, as in simple gaseous molecules, such as ammonia and nitric oxide. Nonmolecular compounds, e.g. sodium hydride, are best represented with colour-coded spheres that emphasise packing.