| 单词 | compound microscope |
| 例句 | When processed properly, scientists like Lackmann can examine the otolith with a compound microscope and count the layers, like the rings on a tree, and learn the age of the fish. Study uncovers hundred-year lifespans for three freshwater fish species in the Arizona desert 2023-10-30T04:00:00Z Figure 26.16 A compound microscope composed of two lenses, an objective and an eyepiece. College Physics for AP Courses 2015-08-12T00:00:00Z The optics of a compound microscope’s lenses change the orientation of the image that the user sees. Biology for AP Courses 2022-06-09T00:00:00Z But the compound microscope, invented around 1600, opened up a hidden world of microbes, allowing scientists to start naming them after their shapes, said Richard Barnett, a historian of science in Britain. Why Virus Variants Have Such Weird Names 2021-03-02T05:00:00Z It was not until he recently took a closer look with a powerful compound microscope — magnifying the specimen up to 1,000 times — that he noticed the tiny ticks within. Lyme bacterium's possible ancestor found in ancient tick 2014-06-05T04:00:00Z It was not until he recently took a closer look with a powerful compound microscope—magnifying the specimen up to 1,000 times—that he noticed the tiny ticks within. Lyme Disease’s Possible Bacterial Predecessor Found in Ancient Tick 2014-06-05T04:00:00Z Pollen analysis is another common use for a compound microscope. Bees under the Microscope 2013-02-22T15:45:00.277Z The kind of compound microscope to be purchased will depend upon the nature of the work of the investigator. Directions for Collecting and Preserving Insects 2012-03-28T02:00:31.483Z Most of his work was done with the simple dissecting microscope—and it was the need which he found for higher powers that induced him, in 1846, to buy a compound 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 compound microscope is one with a tube from four to ten inches long, an arrangement for holding the object to be looked at, and a mirror below to reflect light upon or through it. 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 Erecting Prism—This is fastened over the ocular and erects the image received from the compound microscope, thereby materially assisting any dissection or other operation on the stage of the microscope $7.25 No. 168. Microscopes and Accessory Apparatus Catalogue No. 40 2011-04-14T02:00:42.743Z Simple or compound microscopes, forceps, and a bristle. A Guide for the Study of Animals 2011-01-18T03:00:14.913Z The Lens and Microscope.—In the examination of the minuter forms of insect life the naked eye is not sufficient, and a hand-lens, or, for more delicate work, the compound microscope will be found necessary. Directions for Collecting and Preserving Insects 2012-03-28T02:00:31.483Z Why are compound microscopes superior to simple ones? A Treatise on Physiology and Hygiene For Educational Institutions and General Readers The great variety of form, however, will provide a vast amount of enjoyment to anyone who possesses a good magnifying lens or a small compound microscope. Butterflies and Moths (British) To investigate the formation and growth of the embryo itself requires well-trained eyes and hands, and the expert use of a good compound microscope. The Elements of Botany For Beginners and For Schools Have you ever seen a drop of pond water under a compound microscope? Earth and Sky Every Child Should Know Easy studies of the earth and the stars for any time and place “But we have a good deal of fun with 218 the big compound microscope, too–and more without it,” acknowledged Studley. Pemrose Lorry, Camp Fire Girl 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 It is true that the Cinque Ports was called a buccaneer, instead of a pirate, but no man can see the difference between buccaneering and piracy without the help of a large-sized compound microscope. Harper's Young People, July 13, 1880 An Illustrated Weekly The compound microscope is rarely necessary except in cryptogamic botany and vegetable anatomy; but it is very useful and convenient, especially for the examination of pollen. The Elements of Botany For Beginners and For Schools This is the compound microscope, the invention of which soon followed the telescope. Pioneers of Science Now, a compound microscope is practically a telescope with the object at the long focus, very close to a short-focus lens. How it Works Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use Explain, by means of the diagram, the action of the compound microscope. A Treatise on Physiology and Hygiene For Educational Institutions and General Readers In this year Joseph Jackson Lister, an English amateur optician, contributed to the Royal Society the famous paper detailing his recent experiments with the compound microscope. A History of the Nineteenth Century, Year by Year Volume Two (of Three) But my lens has not sufficient magnifying power to reveal more, so I must tell you what I have seen of Melicerta under my compound microscope. Country Walks of a Naturalist with His Children There's always the distorting lens of one's own mind to be taken into consideration; quite often there's another fellow's: the eye-piece of the compound microscope, and the objective. The Brentons I then broke up a specimen, and examined the portions under a compound microscope, using a Nachet No. 4. Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology Rittenhouse first suggested the true explanation of the experiment, of the apparent conversion of a cameo into an intaglio, when viewed through a compound microscope, and anticipated many years Brewster's theory. Continental Monthly , Vol. 6, No. 1, July, 1864 Devoted to Literature and National Policy. For the study of the lower plants, as well as the histology of the higher ones, a compound microscope is indispensable. Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Place a cover-glass on the same and examine with a compound microscope. Physiology and Hygiene for Secondary Schools The simplest telescopes were made only about two hundred and fifty years ago, and the earlier compound microscopes at a yet later date. Outlines of the Earth's History A Popular Study in Physiography These include several compound microscopes, a good agricultural library, meteorological apparatus, six breeds of cattle and four of swine, orchard, nursery, arboretum, vineyard, etc., etc. The Prairie Farmer, Vol. 56, No. 2, January 12, 1884 A Weekly Journal for the Farm, Orchard and Fireside I only wish I could dissect with a compound microscope: what things might not one get access to. Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries Objects to be studied with the compound microscope are usually examined by transmitted light, and must be transparent enough to allow the light to pass through. Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Mount on a glass slide some of the scum found on stagnant water and examine it with a compound microscope. Physiology and Hygiene for Secondary Schools During the 26th, and the three following days, the sea was covered with a bluish film which, when examined by a compound microscope, appeared formed of an innumerable quantity of filaments. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 3 Explanations requiring the use of a compound microscope do not enter necessarily into these lessons. Outlines of Lessons in Botany, Part I; from Seed to Leaf To do thorough and satisfactory work in physiology in our higher schools a compound microscope is almost indispensable. A Practical Physiology I also observed the other organisms present in the soil and took photos of microarthropods with the help of a compound microscope. Free from School Place a small drop of the blood in the middle of a glass slide, protect the same with a cover glass, and examine with a compound microscope. Physiology and Hygiene for Secondary Schools In the course of a few days I received a splendid achromatic compound microscope and some books, which I duly handed over to my friend, telling him it was from an unknown hand. Life and Letters of Thomas Henry Huxley — Volume 3 In these lessons, however, it is not desirable to enter upon subjects involving the use of the compound microscope. Outlines of Lessons in Botany, Part I; from Seed to Leaf I never saw a compound microscope during my years of study in Paris. Medical Essays, 1842-1882 We put the soil samples in the tulgren funnel and observed the arthropods that fell into the beaker under a compound microscope. Free from School Dilute with physiological salt solution on a glass slide and examine with a compound microscope. Physiology and Hygiene for Secondary Schools It strikes us nowadays as extraordinary that he should have had no compound microscope when he went his "Beagle" voyage; but in this he followed the advice of Robt. Life and Letters of Charles Darwin — Volume 1 It was thought that the use of this Herschel aplanatic combination as an eyepiece, combined with the Wollaston doublet for the objective, came as near perfection as the compound microscope was likely soon to come. A History of Science — Volume 4 I have referred you to the proper authorities for the account of those improvements which about the year 1830 rendered the compound microscope an efficient and trustworthy instrument. Medical Essays, 1842-1882 After that Jagan, Sir and I photographed microarthropods with the help of the compound microscope that has a camera attached to it. Free from School The man to whom chief credit is due for directing those final steps that made the compound microscope a practical implement instead of a scientific toy was the English amateur optician Joseph Jackson Lister. A History of Science — Volume 4 Most of his work was done with the simple dissecting microscope—but it was the need which he found for higher powers that induced him, in 1846, to buy a compound microscope. Life and Letters of Charles Darwin — Volume 1 Many opticians, indeed, quite despaired of ever being able to make a satisfactory refracting compound microscope, and some of them had taken up anew Sir Isaac Newton's suggestion in reference to a reflecting microscope. A History of Science — Volume 4 For the physiologist this perfection of the compound microscope had the same significance that the, discovery of America had for the fifteenth-century geographers—it promised a veritable world of utterly novel revelations. A History of Science — Volume 4 |
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