Electron Microscopes Lab Report

The illuminating parts of a microscope enable us to see the detail of the subject placed under the microscope. The three main parts that enable us to do this are: the condenser which illuminates the object that is placed under the microscope, the objectives which forms the magnified image, and the eyepiece which enables us to see the magnified

Preparing specimen for electron microscope hard, light microscope still very useful as a window on living cells.

Concept 6.1 Biologists use microscopes and the tools of biochemistry to study cells 1. The study of cells has been limited by their small size, and so they were not seen and described until 1665, when Robert Hooke first looked at dead cells from an oak tree. His contemporary, Anton van Leeuwenhoek, crafted lenses and with the improvements in optical aids, a new world was opened. Magnification and resolving power limit what can be seen. Explain the difference. Magnification is the ratio of an object’s image size to its real size. Resolution is a measure of the clarity of the image; it is the minimum distance two points can be separated and still be distinguished

Using the microscope provided to analyze the different size of the different cells and organisms

The resolution in microscopy terms refers to the numerical aperture of the objective lens. The higher the numerical number the better the resolution of the image; also the shorter the wavelength the better the resolution (Alonzo p55).

In the history of the Supreme Court, there have been many First Amendment cases that outline if exercises of free speech and expression are constitutional or unconstitutional. One of the most paramount 1st amendment cases is that of Tinker v. Des Moines Independent Community School District (1969). This significant case helped shape the extension of symbolic speech, as well as ensure the freedom of speech and expression to students in schools.

The purpose of this lab is to insure that all students understand how to correctly use the microscope. Students will all learn proper care and handling of the microscope, as well as learning the correct way to look at slides and specimens through the microscope.

It was then during the 1950’s that Zacharias Jansen and his father, Han Jansen, created the first high-powered compound light microscope. Images could be magnified up to 9x which was a novel feat at that time. Zacharias and his father created the device after experimenting with glasses and discovered that by placing multiple lens in a tube they could increase magnification. Unfortunately, the microscope lacked the high resolution we have come to expect in modern-day light microscopes. The images produced by the Hans’ primitive microscope was extremely blurry and had limited

While this writer had some rudimentary knowledge of the impact serotonin had on the brain, "Why? The Neuroscience of Suicide" by Carol Ezzell piqued my curiosity on the role levels of serotonin and the process by which it is absorbed in the brain affect suicidal patients. This article was recently posted on the Neurology and Behavior website as supplemental reading for neurology and behavior's spring semester 2003 class. In this article the writer Carol Ezzell weaves her own personal experience with informative reporting of groundbreaking neuroscience research on suicide. Through further research I discovered various articles on a group of scientists from Columbia

Resolution is related to the numerical aperture of the objective lens – the higher the numerical aperture, the better the resolution; and the wavelength of light passing through the lens – the shorter the wavelength, the better the resolution.

The speech that Macbeth gives upon hearing that his wife is dead in Act V, Scene V shows a great impact on his personality and selfishness. Macbeth’s words captures the reader’s attention and also influences one of the major themes in the drama. Throughout the whole play he shows an excessive relationship with his wife. Both Macbeth and Lady Macbeth have each other’s backs with the remorse both of them have for keeping a deadly secret between each other. At the end of the play, it seems that Lady Macbeth’s death didn’t mean a thing to Macbeth because he does not feel sad or as if he has not lost something very important to him.

NOTE: Answer Question A only if you used a compound light microscope for this experiment.

“The prefix ‘nano’ stems from the ancient Greek word for ‘dwarf’. In science, it means one billionth (10 to the minus 9) of something, thus a nanometer (nm) is one billionth of a meter, or 0.000000001 meters. A nanometer is about three to five atoms wide, or some 40,000 times smaller than the thickness of human hair. A virus is typically 100 nm in size.” (Paddock) “The ability to manipulate structures and properties at the nanoscale in medicine is like having a sub-microscopic lab bench on which you can handle cell components, viruses or pieces of DNA, using a range of tiny tools, robots and tubes.” (Paddock) There is one type of microscope in the world that has the ability to see things at the nano scale. That microscope is a scanning tunneling microscope. It has the ability to zoom in on an object by 1,000,000 times as the average high school and college microscope only reaches 100(Nano.gov).

Finally, the beam strikes a fluorescent screen. The magnified image of the object can be seen on the screen of a television-like monitor. The images formed by a transmission electron microscope are black and white like an X-ray picture. Computers can be used to translate the image information into a three-dimensional colored image.

Scientific research requires proper understanding of different tools applied in various steps that are critical to the end results. It is undeniable that scientific work requires the collaboration of various study fields in order to develop proficient solutions. In line with these arguments, Transmission Electron Microscopy (TEM) is an example of scientific application, which developed as a result of combined efforts of scientists from different fields. TEM facilitates visualization of minute cellular structures, something that provides a platform for further studies. However, with increased technological advancements and the quest for more discoveries, scientists have improved TEM significantly. In particular, several sample preparation