Microscopes

dust shied is the one top the objectives. It protects the objectives from dust.

Focusing away from the object when adjusting the microscope helps prevent eye strain and allows the viewer to see the entire field of view. It also helps in finding the center of the field of view before fine-tuning the focus on the target object. This technique ensures optimal image quality and overall better viewing experience.

ive used those microscopes in geology labs, i know they allow you to see nylon fibres, but for nanoparticles you really need more focusing power. The lab i used t work in made use of SEM(scanning electron microscope) to see particles in the reange of 200 nanometres to ~900nanometres altough the microscope is capable of focousing in and out a tremendous amount

wikipedia has some useful information on this microscope

http://en.wikipedia.org/wiki/Scanning_electron_microscope

Magnification is the amount by which the image you see will be larger than the actual object, ie. if the image you see appears to be twice as large as the original object then it will be a 2x magnification. (magnification = size of image / size of object)

Resolution is the smallest possible visible thing on the enlarged image. On a satellite picture the resolution may be 1m2 meaning that anything smaller is not visible on that picture. In the case of an electron microscope, for example, anything smaller than 1 electron will not be visible using the electron microscope.

The maximum magnification of a compound microscope is typically around 1000x. This magnification is achieved by combining the magnification of the objective lens and the eyepiece. Beyond 1000x, the image quality starts to degrade due to limitations in optical performance.

Velcro was designed for and originally used as a fastener for clothing. However, it was slow to be adopted by the fashion industry due to the way the original design looked when incorporated into clothing. It was not until many years later that the manufacturing process was perfected and Velcro's use became widespread in a wide variety of applications.

Antonie van Leeuwenhoek is the scientist known for using single-lens microscopes to observe bacteria, human blood cells, and other microorganisms. He was a Dutch tradesman and scientist who made significant contributions to the field of microbiology in the 17th century.

To count algae cells in a microscope, prepare a sample of the algae suspension, pipette a known volume onto a counting chamber slide, place it under the microscope, and count the cells within a representative grid area. Calculate the concentration of algae cells per unit volume based on the average cell count in the grid. Remember to consider the dilution factor if you diluted the sample before counting.

Because a microscope has a convex lens, and they bend light so that when you see it it appears upside-down and backwards (or the other way around). For example, the letter "d" will appear to be the letter "p"

Theodor Schwann made important contributions to microscopy by using improved lenses to study animal tissues at a cellular level. His work on the development of the cell theory, alongside Matthias Schleiden, laid the foundation for modern cell biology and our understanding of cells as the basic unit of life.

A microscope makes small things appear larger by magnifying them. It does not change the size of the actual object, but only enlarges the image that you see through the lens.

A two lens microscope uses a combination of an objective lens and an eyepiece lens to magnify an image. The objective lens captures the image and magnifies it, then the eyepiece lens further magnifies the image to allow for viewing. This combination of lenses allows for high magnification and resolution of the specimen being observed.

A phase microscope is used to enhance the contrast of transparent or semi-transparent specimens by exploiting variations in refractive index. It allows for visualization of details that may be difficult to see with a standard brightfield microscope, making it useful for observing living cells and tissues.

Scanning Electron Microscopes have a much larger zoom range. therefore the image from a SEM is more in depth. think of it as looking at a basketball from far away... you see an orange ball. but when you look at it upclose, you see the black lines and dimples on the ball. same goes for whatever your looking at under the SEM

Crystallography is essential to geologists as it allows them to understand the atomic arrangement of minerals, providing insights into their physical and chemical properties. By studying crystal structures, geologists can identify minerals, interpret their formation conditions, and infer geological processes that shaped Earth's history. This information is crucial for mineral exploration, understanding rock formations, and reconstructing past environments.

The first scientist to observe cells under a simple microscope was Robert Hooke in the 17th century. In 1665, Hooke used a compound microscope to examine a thin slice of cork and described the cells he observed as resembling tiny rooms or cells, giving rise to the term "cell."

like a somboody

Robert Hooke called the basic structural units of life "cells." He observed these microscopic structures in cork under a microscope in the 17th century and likened them to the small rooms or cells that monks lived in, hence the term "cell."

the iris diaphragm controls the amount of light that passes through the stage and, consequently, through the specimen. Reducing the iris diaphragm aperture increases contrast for an image focused under high power by reducing the amount of light that both fills the objective lens and deracts around specimen edges. Opening the iris diaphragm under high magnification increases "flare", the appearance of light "washing out" an object. By decreasing the flow of light through the specimen, the iris diaphragm limits light defraction and saturation.

one can make images of atoms using a scanning tunneling mcroscope.

The working distance of a microscope is the distance between the objective lens and the specimen being viewed. It is important as it determines the amount of space available for manipulation of the specimen or for other tools to be used during observation. A longer working distance allows for more flexibility and easier adjustment when viewing specimens.

Robert Hooke discovered cells under a microscope in 1665. He took a sliver of cork and called the small encasements he saw, cells. They were dead cells, though.

The first person to see living cells, was a man named Anton van Leeuwenhoek. He took pond water and observed that under a microscope.

The stage is the part of the microscope that supports the slide being viewed. It is where the slide is placed for observation and can often be moved horizontally and vertically to adjust the position of the specimen. The stage may also have clips or a mechanical stage to hold the slide in place during observation.

Focusing in a microscope is achieved by adjusting the distance between the objective lens and the specimen. By moving the lens closer or farther away from the specimen, the light rays passing through the lens converge or diverge, resulting in a sharp image. The fine focus knob is used for precise adjustments to achieve a clear and crisp image of the specimen.

Light doesn't reflect light, nor does any other

electromagnetic radiation.