The earliest microscope magnified the object ten times the actual size. They were made up of a tube with a plate for the object at one end and, at the other, a lens which magnified the object. In 1609, Galileo worked with the lenses and made more advanced instrument with a focusing device. Anton van Leeuwenhoek taught himself methods of polishing tiny lenses of extreme curvature which gave best magnification of that time up to 270 diameters. This led to the building of his microscopes and his discoveries. He was also the first to see and explain yeast plants, bacteria, life in a drop of water, and the circulation of blood corpuscles in capillaries. In his life, he used his microscope to make lots of discover on living and nonliving things. Robert Hooke who came after Leeuwenhoek improved his discoveries using his copy of microscope. In 19th century, Charles A. Spencer build a microscope that gave magnification up to 1250 diameter with lights. He also founded an industry that created microscopes (Bells, History of Microscope, About.com).
Further more, improvements in microscopes helped the researchers a lot to discover more about cells and make it easier to know more details
Apfeldorf’s article “Uncovering a Tiny World” discusses Hooke’s book which is known for its microscopic illustrations of insects and microbes that Hooke had drawn as he viewed them under the microscope. His elaborate drawings of tiny objects and insects were the scientific evidence that supported his claims of the significant value of the microscope to science and the many ways it could be used. The book also contained a description of how to make a powerful microscope with a spherical lens, much like Leeuwenhoek’s glass pearls. Leeuwenhoek traveled to England that same year and is believed to have obtained a copy of Hooke’s book and
Microsocopy has been of prime importance in various fields in biology studies like microbiology, zoology, botany, biotechnology and various other feilds, owes it's existence to Antony Van Leeuwenhoek. In 1673 early microscope consisted of a bio cancave lens and in two metal plates. Over the years, microscopes have evolved from the simple, single-lens instrument of Leeuwenhoek, with a magnification of 300, to the present-day electron microscopes capable of magnifications greater than 250,000. The two important types of microscopes are light microscope and electron microscope.The former use visible light or ultraviolet rays to illuminate specimens. The different types of microscopy includes bright feild microscopy, dark feild, phase contrast and fluorescent microscopy. Fluorescent microscope use UV radiation whose wave length are shorter than those of visible light. Electron beams are used in electron microscope and also magnets.
The invention of compound microscope in 1590 started to way to a new era of microscopy. The primitive microscope could magnify the object 20 to 30 times its original size. With more development in the field of optical microscopy by the beginning of the 20th century optical microscopes became more powerful and are capable of magnifying objects to 1000x their original size.
As the building block of life, cells contain inconceivable amounts of genetic information, as well as perform functions any living being needs in order to survive. Since a lot of people tend to struggle with such a complete utterance, Joshua Z. Rappoport develops the scholarly text, The Cell, on,”discovering the microscopic world that determines our health, our consciousness, and our future,”(front cover). Other than this text, many others publish their works in the past on this subject; some of which are Nobel Peace Prize winners. Throughout chapter one, “A Day the World Changed”, Rapporport refers to Robert Hooke who uses a microscope in the 1660s to examine a slice of cork. Overall, “what he saw changed human understanding of the world in a way at least as profound as the first telescopic examination
Compound Light Microscope is a device that uses visible light and magnifying lenses to search tiny objects that are not visible to the naked eye, or finer detail than the naked eye allows. Samples you can use with this device is a leaf, bug, or feather, but it is very blurry and pale color. The microscope works by an eyepiece, ocular lens, the field of view, focus dials, supporting arm, rack stop, objective lenses, slides, cover slips, and many other things. It works by the light source is below the stage, and this light shines up through the thin specimen and then through the magnifying lenses. Prepared the specimen for viewing by placing it on a regular glass side. It can be stained with a dye that contract to nearly transparent
I believe the most useful creation from science is medicine. It is applied all over the world in various different forms to treat and prevent abnormalities, illnesses and diseases. The discovery of medicine has caused the life span of a human, and other species, to increase. But, by doing that, we have wea...
Through the years, developments in Science and Technology can be noticed. Advancement in science and technology have made life better, easier, and efficient. Take computers, as an example. In old days, computers were as big as a room, and were not comfortable to use because the computer screen can damage the eyes. Conversely today, computers are small as the size of our palm, and has better display. Unlike the computers in the past, which were slow and has limited functionalities, computers in the present time are fast and has all the functionalities an individual needs for his or her everyday life. Technology is still developing to improve the life of every living creature on Earth. However, such developments will not happen without the contributions of the people in the past specially the individuals during the Renaissance, which is the time when intellect, and artistic achievements were being recognized.