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What do microscopes use instead of light particles to examine a sample?
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Differentiate comcound microscope to electron microscopes?
a compound microscope uses light and an array of lenses to magnify an objct an electron microscope on the other hand uses particles beams to illuminate the sample being use,/.
What happens to sample of matter when its particles lose kinetic energy?
its particles stop moving around because of loosing kinetic energy. As you know kinetic energy is something that moves around .And particles in sample of matter cool off and stop.
Which term is defined as a measure of the average kinetic energy of particles in a sample?
temperature
What type of energy is associated with random motion of particles in a sample of gas?
thermal energy or kenetic energy
How many alpha particles are emitted in 1.0 min by a 5.0 mg sample of 226 Ra?
1.11 x 10^10 alpha particles
Which microscopes creates an image of the surface of a sample?
582
What are the different types of microscopes and their purposes?
There are reflective microscopes (similar in design to a telescope), and transmission microscopes where the objective is on the other sample and used for looking at slides. There are phase-contrast microscope, electron microscopes and scanning tunneling microscope.
Differentiate comcound microscope to electron microscopes?
a compound microscope uses light and an array of lenses to magnify an objct an electron microscope on the other hand uses particles beams to illuminate the sample being use,/.
Compared to the particles in a hardened lava sample the particles in a liquid lava sample?
Have less kinetic energy
Contrast the way light microscopes and electron microscopes magnify objects?
Sample illumination is achieved in different ways in a light and electron microscope.In a light microscope, the sample is illuminates with light (photon energy)In an electron microscope, the sample is illuminated by a beam of electrons.Devon
Which samples contain visible particles?
which sample contains visible particles
When a sample of gas is heated what happens to the motion of the particles?
The motion of particles is accelerated.
A scientist studying humus would most likely examine a sample of what?
Soil
What are three uses of the Transmission Electron Microscope?
There are two types of electron microscopes: scanning and transmission. They function differently from regular ocular microscopes in that the focusing devices are not glass lenses. The focusing device is a beam of electrons in a vacuum tube focused between two large magnets, with the sample to be observed in the middle. Electron microscopes were built so that a sample could be studied not at the cellular level, but at the molecular level. It is possible to see actual molecules with an electron microscope. Scanning electron microscopes (SEM) examine the surface of the sample. The sample is first frozen in liquid nitrogen, then fractured so it spits in half, is then placed in the vacuum chamber of the scanning microscope and the electron beam scans the inner surface of the sample. The electrons are then digitized, sent to a computer and an image is produced. With transmission electron microscopes (TEM) the beam of electrons penetrates the sample - it is not a surface scan. Again, a biological sample is frozen in liquid nitrogen, then thin sectioned - cut into microscopically thin slices - then placed into the vacuum chamber of the TEM and the beam penetrates the sample to gain imagery of the molecular structure of the sample. The first million-volt electron microscope was developed by Jan LePoole, a Dutch physicist, during WWII in an effort to study metal fracture rates for bombs. He beat the Nazis in a race to build the two story microscope, won the Noble Prize and was knighted by the queen of the Netherlands. The major manufacturers of these microscopes are Philips, Hitachi, and Joel. Visit any of their websites. To learn more about scanning and transmission electron microscopes also visit the website of the Microscopy Society of America (MSA).
What happened to the kinetic energy of the particles in a sample of gas as the temperature of the sample increase?
The average Kinetic energy of the atoms in the sample will increase as the sample is heated.
How do they various kinds of microscopes differ as tools in the study of cells?
electron microscopes can do up to x2 000 000 and must be a very small peice of sample. But it does not show the thing moving just takes an image
Which term is the measure of the average kinetic energy of the particles in a sample?
Temperature measures the average ____ of the particles in a material
