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The copper is used to support the polymer layer on which the particles/object of interest is deposited. You need a thin layer of polymer/carbon because in TEM you measure transmitted electrons, so the electrons need to be able penetrate the material on which the sample is deposited. A few micrometers of material can already absorb all the electrons. The copper is just to support this polymer layer and to make a sample which is easy to handle.
What else can I help you with?
The two sets of lines the geographic grids consist of?
Longitude and latitude.
How are grids formed and what are their uses?
Grids are formed by the intersection of horizontal and vertical lines, creating a structured framework for organizing data or spatial information. They are commonly used in various fields, such as cartography for mapping, in design for layout planning, and in computing for data organization and analysis. Grids help ensure consistency, facilitate navigation, and enhance visual clarity. Additionally, they can assist in calculations and modeling by providing reference points.
How do smart grids differ from the current electricity infrastructure in the US?
smart grids are different from the existing infrastructure in the united states because it is much capible to destribute electricity more efficiently and of allowing communications between the various systems of the grid, and they also provide the consumer the detail of there usage and guide them how to reduce there consumption because they exist on modern technology. but the other old existing infrastructure is based on old technology, they have there old destribution plan, line losses and not able to know the usage of every consumer and the peak hours of usage like the smart grids that's why the reason smart grids are better then old electricity infrastructure.
What is the conclusion in alternating current and measurement?
The only thing that can be concluded about alternating current is that it alternated at 50 or 60 Hz throughout the grids around the world.
What is artificial grounding electrode?
An artificial grounding electrode is a man-made conductor or system designed to safely dissipate electrical currents into the ground, enhancing the safety and performance of electrical systems. It typically consists of materials such as copper or galvanized steel and can include rods, plates, or grids buried in the soil. These electrodes are used in electrical installations to provide a low-resistance path for fault currents, protecting both equipment and personnel from electrical shock and fire hazards. Proper installation and maintenance are crucial for ensuring their effectiveness.
What is a vacuum tube that contains a grid called?
one grid - triodetwo grids - tetrodethree grids - pentodefour grids - hexodefive grids - heptode, pentagrid convertersix grids - octodeseven grids - nonodeetc.
What are map for?
the map grids are the grids that are on the map for the earth to be measured.
What is the ratio of corresponding sides in two grids?
There is none, since there are no grids!
What is a hanger wire made of?
A hanger wire is typically made of galvanized steel, which is coated with a layer of zinc to protect it from corrosion. This material is commonly used in construction applications to hang ceiling grids, light fixtures, and other suspended elements.
Why do archaeologist create grids?
Archaeologists create grids because it makes it easier for them to measure where things were found, and where they have dug. Without grids it would be easy to become confused.
Are the two grids in the stinger bug zapper conected together?
The two grids are not connected together. There is a high voltage difference between the two grids. When the bug tries to crawl through the grids to get to the light, it completes the circuit and the electricity passes through the bug. The electricity is what kills the bug.
Coordinate grids?
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How many grids are there in India?
4
What are coordinates grids used for?
coordinate grids are used for coordinates, coordinate grid is used for the coordinates so you know where you can place your coordinate on.
How many 10 by 10 grids would you need to make a thousand cube?
10 grids, stacked, would make a thousand cube.
3 uses for copper?
Electrical wiring: Copper is an excellent conductor of electricity, making it the preferred material for electrical wiring in buildings, power grids, and electronic devices. Plumbing: Copper pipes are durable and resistant to corrosion, making them ideal for plumbing systems in residential and commercial buildings. Roofing: Copper roofs have a long lifespan, are resistant to corrosion, and develop a unique patina over time, making them a popular choice for architectural applications.
Why is the department of energy developing more energy power source instead of using only one energy power source?
A good question. We have not found one reliable, inexhaustible, inexpensive, easy-to-transport, and environmental-friendly energy source. Even if we have, we shall probably squander the good fortune or become dumb, fat, and happy. Challenges make us stronger and better. Relatively speaking, we can say the following. Coal -- reliable, almost inexhaustible, inexpensive so far, OK-to-transport, but most carbon-rich Crude oil -- reliable, almost at peak production, quite expensive, carbon-rich; oil spills are a drag nuclear -- reliable, exhaustible, rather inexpensive so far, risky-to-transport, but no carbon; no one wants to store the nuclear waste in his backyard solar -- needs sunny days; inexhaustible, expensive so far, need smart grids and storage, but no carbon wind -- needs wind; inexhaustible, expensive so far, need smart grids and storage, but no carbon hydroelectric -- need running water, almost inexhaustible, inexpensive so far, need smart grids and storage, but no carbon; questionable to wild life. hydrothermal -- only works in some regions, almost inexhaustible, expensive so far, need smart grids and storage, but no carbon. fusion -- still a dream ===========================
