单词 | simple microscope |
例句 | He had a table in the middle of the room where he sat to look at his specimens through a magnifying glass or simple microscope, and to read his scientific papers. Charles and Emma: The Darwins' Leap of Faith 2009-01-01T00:00:00Z To investigate the nature of chromosomes, Henking examined cells under a simple microscope. Seeing X Chromosomes in a New Light 2014-01-20T23:07:16Z In one of his letters he speaks on this point, and remarks that he suspects the work of a man who never uses the simple microscope. Charles Darwin: His Life in an Autobiographical Chapter, and in a Selected Series of His Published Letters 2012-01-22T03:00:19.733Z A simple microscope, some mounted needles, a sharp knife and a pair of small forceps, are the only things needed to begin with. Through a Microscope Something of the Science Together with many Curious Observations Indoor and Out and Directions for a Home-made Microscope. 2011-12-29T03:00:20.733Z It was plainly divided, as sketched by me under a simple microscope, by transverse opaque partitions, which I presume represent the great cells figured by Kowalevsky. The Descent of Man and Selection in Relation to Sex, Vol. I 2011-01-17T03:00:49.523Z H. Westien made use of two Chevalier-Br�cke’s simple microscopes with their long working distances in order to form an instrument in which the curvature of the image was not entirely avoided. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z The glasses of magnifying spectacles, like those commonly used by aged persons, are simple microscopes. A Treatise on Physiology and Hygiene For Educational Institutions and General Readers In the White Lily the stomata are so remarkably large that they may be seen by a simple microscope of moderate power, and may be discerned even by a good hand lens. The Elements of Botany For Beginners and For Schools There are several devices for mounting these simple microscopes on stands so that they can be kept steady and the objects to be examined placed behind them. Through a Microscope Something of the Science Together with many Curious Observations Indoor and Out and Directions for a Home-made Microscope. 2011-12-29T03:00:20.733Z My instrument does certainly magnify to a marvellous extent, but not by the old device of the simple microscope, which merely focussed a large area of light rays into a small one. The Crack of Doom Rude and simple microscopes were used with advantage as early as the seventeenth century. An Introduction to the History of Western Europe All simple microscopes throw an enlarged image of the object upon the retina. A Treatise on Physiology and Hygiene For Educational Institutions and General Readers I felt convinced that the simple microscope, composed of a single lens of such vast yet perfect power was possible of construction. Masterpieces of Mystery In Four Volumes Mystic-Humorous Stories The first thing you need is a simple microscope, that is, one with a single lens, small enough to be carried in the pocket. Through a Microscope Something of the Science Together with many Curious Observations Indoor and Out and Directions for a Home-made Microscope. 2011-12-29T03:00:20.733Z When we consider that von Baer worked chiefly with a simple microscope and dissecting needles, the minuteness and accuracy of his observations are astonishing. Form and Function A Contribution to the History of Animal Morphology Why should not compound and simple microscopes each have their merits? Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries Compound microscopes are so constructed that the enlarged image of an object is again magnified by a second lens, and hence their magnifying power is vastly superior to that of simple microscopes. A Treatise on Physiology and Hygiene For Educational Institutions and General Readers Now I want to beg you to look under the simple microscope at the enclosed leaves and seeds, and, if you possibly can, tell me their genera. More Letters of Charles Darwin — Volume 2 There is no end to the beautiful and wonderful things one can see with the simple microscope. Through a Microscope Something of the Science Together with many Curious Observations Indoor and Out and Directions for a Home-made Microscope. 2011-12-29T03:00:20.733Z Smith and Beck were so pleased with the simple microscope they made for me, that they have made another as a model. More Letters of Charles Darwin — Volume 1 It was, as sketched by me under a simple microscope, plainly divided by transverse opaque partitions, which I presume represent the great cells figured by Kovalevsky. The Descent of Man The accompanying diagrams will explain the action of the compound microscope compared with that of the simple microscope. A Treatise on Physiology and Hygiene For Educational Institutions and General Readers In one of his letters he speaks on this point, and remarks that he always suspects the work of a man who never uses the simple microscope. Life and Letters of Charles Darwin — Volume 1 Besides making these discoveries, he greatly improved the microscope and the telescope, and invented a simple microscope made of a globule of glass. A History of Science — Volume 2 I do not know who does the Botany; Owen does the Zoology, and I have sent him an account of my new simple microscope, which I consider perfect, even better than yours by Chevalier. More Letters of Charles Darwin — Volume 1 Magnifying glasses, mounted in frames such as are for sale by opticians and others, for the detection of counterfeit money, are simple microscopes, and are useful in studying the coarser structure of plants and animals. A Treatise on Physiology and Hygiene For Educational Institutions and General Readers |
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