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A vacuum pump is a device that removes gas molecules from a sealed volume in order to leave behind a partial vacuum. The vacuum pump was invented in 1650 by Otto von Guericke.

Pumps can be broadly categorized according to three techniques:[1] * Positive displacement pumps use a mechanism to repeatedly expand a cavity, allow gases to flow in from the chamber, seal off the cavity, and exhaust it to the atmosphere. * Momentum transfer pumps, also called molecular pumps, use high speed jets of dense fluid or high speed rotating blades to knock gaseous molecules out of the chamber. * Entrapmentpumps capture gases in a solid or absorbed state. This includes cryopumps, getters, and ion pumps. Positive displacement pumps are the most effective for low vacuums. Momentum transfer pumps in conjunction with one or two positive displacement pumps are the most common configuration used to achieve high vacuums. In this configuration the positive displacement pump serves two purposes. First it obtains a rough vacuum in the vessel being evacuated before the momentum transfer pump can be used to obtain the high vacuum, as momentum transfer pumps cannot start pumping at atmospheric pressures. Second the positive displacement pump backs up the momentum transfer pump by evacuating to low vacuum the accumulation of displaced molecules in the high vacuum pump. Entrapment pumps can be added to reach ultrahigh vacuums, but they require periodic regeneration of the surfaces that trap air molecules or ions. Due to this requirement their available operational time can be unacceptably short in low and high vacuums, thus limiting their use to ultrahigh vacuums. Pumps also differ in details like manufacturing tolerances, sealing material, pressure, flow, admission or no admission of oil vapor, service intervals, reliability, tolerance to dust, tolerance to chemicals, tolerance to liquids and vibration.

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Breast pumps use suction to extract milk from the breast. A pump creates a vacuum that mimics the suckling action of a nursing baby, stimulating milk flow. The expressed milk is collected in a container attached to the pump for storage or feeding later.


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The term for the empty space where no air exists is vacuum. A vacuum is a space devoid of matter, including air. Vacuum is commonly used in scientific research and technology applications, such as in vacuum chambers or vacuum pumps.


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To test if mechanical waves work in a vacuum, you would need to conduct an experiment where you create mechanical waves in a controlled environment that is a vacuum. If the waves can still propagate and be detected in the vacuum, then it shows that mechanical waves can work in a vacuum. If the waves cannot propagate or be detected in the vacuum, then it indicates that mechanical waves do not work in a vacuum.


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How would you test if mechanical waves work in a vacuum or not?

To test if mechanical waves work in a vacuum, you can conduct an experiment by creating a vacuum chamber and placing a source of mechanical waves, such as a vibrating object, inside. Then, observe if the waves can propagate through the vacuum and be detected by a receiver on the other side of the chamber. If the waves can travel through the vacuum and be detected, it indicates that mechanical waves can indeed work in a vacuum.

Related Questions

Which are the top vacuum pump manufacturers in India?

Some of the leading vacuum pump manufacturers in India include: Toshniwal Instruments (Known for rotary vane and dry vacuum pumps) Avlok (Specializes in industrial and high-vacuum pumps) PPI Pumps (Manufacturer of liquid ring vacuum pumps) Woosung Vacuum Company India (Offers oil-sealed and dry vacuum pumps) Promivac Engineers (Deals in high-performance vacuum systems)


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What are roughing pumps?

Roughing pumps are used in vacuum systems to decrease the pressure in the initial stage. They are typically rotary vane pumps or diaphragm pumps that remove large volumes of gas to create an initial vacuum before a high vacuum pump takes over for further evacuation. Roughing pumps are essential for achieving and maintaining low pressures in vacuum systems.


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There are many companies available in a market, but people talk about quality products only, one company provide you good quality vacuum pressure pumps that is Falcon Vacuum Pumps & Systems.


What exactly do penis pumps do and how do they work?

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How do penis pumps work to enhance male sexual performance and satisfaction?

Penis pumps work by creating a vacuum around the penis, which increases blood flow and causes an erection. This can enhance sexual performance and satisfaction by improving the firmness and size of the erection.


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Busch vacuum pumps can be purchased en eBay or at York Scientific. The Busch R5-400 Evan vacuum pump 15HP is currently selling on eBay for $3,995.00.


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Vacuum pumps are pumps designed to remove or displace gases such as oxygen, or liquids, such as milk. Vacuum pumps are used in a variety of different settings. Milk pumps, both bovine and human, use a vacuum pumps. Trash compactors, vacuum sealers, and even certain types of microscopy uses vacuum pumps.


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Falcon Vacuum Pumps & Systems is the best manufacturer and supplier of Oil free vacuum pressure pumps for paper folding machine in Mumbai and all over India. Falcon is known for its quality standard rules. One can rely on Falcon for the vacuum pressure pumps. Falcon feels proud to be number one in the customer satisfaction.


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What are some consumer products that start with a v?

Vacuum pumps Vitamins


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