Pascals
Pascals - Related Videos
01:03
Application of Pascal's Law
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2023
Pascal's experimentally proven observations—that a change in pressure applied to an enclosed fluid is transmitted undiminished throughout the fluid and to the walls of its container—provide the foundations for hydraulics, one of the most important developments in modern mechanical technology. Hydraulic systems are used to operate automotive brakes, hydraulic jacks, and numerous other mechanical systems. We can derive a relationship between the forces in a simple hydraulic system by applying...
01:04
Pascal's Law
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2023
In 1653, the French philosopher and scientist Blaise Pascal published "Treatise on the Equilibrium of Liquids," which discussed the principles of static fluids. A static fluid is a fluid that is not in motion. When a fluid is not flowing, we say that the fluid is in static equilibrium. If the fluid is water, we say it is in hydrostatic equilibrium. For a fluid in static equilibrium, the net force on any part of the fluid must be zero; otherwise, the fluid will start to flow. Pascal observed...
01:30
Binomial Expansion Using Pascal's Triangle
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2025
Expanding a binomial expression such as (a + b)n results in a predictable sequence of terms that can be systematically derived using Pascal’s Triangle. This triangular array of numbers plays a central role in understanding and computing the coefficients of binomial expansions.Pascal’s Triangle is constructed such that each row corresponds to the coefficients of a binomial raised to a power. The topmost row, known as the zeroth row, corresponds to (a + b)0, and each successive row gives the...
08:42
High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions
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Cited by 8 •
2014
Nuclear magnetic resonance is one of the most important spectroscopic tools. Here, the development of a new approach under high pressure, currently up to 10.1 GPa, is presented. This opens a new window into condensed matter physics and chemistry, where high-pressure research is of great importance.
10:27
Fabrication of Nano-engineered Transparent Conducting Oxides by Pulsed Laser Deposition
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Cited by 15 •
2013
We describe the experimental method to deposit nanostructured oxide thin films by nanosecond Pulsed Laser Deposition (PLD) in the presence of a background gas. By using this method Al-doped ZnO (AZO) films, from compact to hierarchically structured as nano-tree forests, can be deposited.
FAQs
For a fixed normal force, concentrating that force on a smaller area produces a larger numerical pressure or stress in Pascals. Increasing the supporting area has the opposite effect because the same force becomes distributed more broadly. This relationship helps engineers evaluate contact loads, structural loading, and whether a surface or component may exceed its specified limit.
In an enclosed fluid, applied pressure can be transmitted through the fluid rather than remaining only at the point of force application. The resulting pressure acts on surrounding surfaces, including boundaries of the container or system. Engineers therefore use pressure values in Pascals to describe how fluid loading affects equipment and enclosed-fluid components.
The same force-per-area basis describes both quantities, but the engineering context differs. In a solid, the value commonly characterizes stress carried through a material or structural component. In a fluid or gas, it describes loading within the medium and against enclosing surfaces. This distinction helps engineers interpret a reported value according to the system being analyzed.
First identify the normal force acting on the surface or component, then determine the area carrying that force. Divide the force by the area to obtain the pressure or stress value in Pascals. Engineers can then compare the result with a specified material strength, system-performance value, atmospheric condition, or safety limit.
Engineers use kilopascals and megapascals when pressure or stress values are large enough that writing every quantity in single Pascals would be cumbersome. The choice improves readability while retaining the same physical quantity and SI basis. Consistent unit selection is especially useful when documenting loads, material strength, fluid-system performance, or equipment safety limits.
A pressure value provides a quantitative basis for comparing an actual load or operating condition with an allowable or specified limit. In engineering, such comparisons support decisions about structures, machines, industrial equipment, fluid systems, and atmospheric conditions. The outcome may indicate whether a component or system remains within its intended performance or safety range.