Automatic Level

An automatic level is a surveying instrument that establishes a horizontal line of sight for measuring differences in elevation, making it important in construction and engineering surveys. Its internal compensator uses a suspended optical system to correct small angular misalignments after the instrument is roughly leveled, allowing readings to be taken on graduated staffs at different points. By comparing these staff readings, surveyors calculate relative elevations and set grades, slopes, and level benchmarks for foundations, roads, drainage, and other infrastructure. Regular calibration and stable setup conditions help maintain measurement accuracy and reliability in field work.

Automatic Level - Related Videos

Education

JoVE Core - Social Psychology

Automatic Processing and Automatic Social Behavior

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2025

Automatic processing refers to the cognitive operations that occur without conscious intent or awareness, playing a fundamental role in shaping social cognition and behavior. These processes enable individuals to navigate complex social environments efficiently by relying on mental shortcuts and pre-existing knowledge structures known as schemas. One of the most influential mechanisms underlying automatic processing is priming, which subtly activates mental representations through exposure to...

High-Level and Low-Level Awareness

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2024

Controlled processes in human consciousness represent high-alert mental states where individuals deliberately focus their attention on achieving specific goals. Controlled processes can be seen in situations like mastering new technology, where a person might become so absorbed that they ignore surrounding distractions. Such processes involve selective attention, requiring one to concentrate on particular elements of experience while disregarding others. These are governed by executive...

Education

JoVE Core - Analytical Chemistry
Free Sample

Leveling Effect

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2024

In acid-base chemistry, the leveling effect refers to the limitation imposed by the solvent on the strength of acids and bases in solution. When a base stronger than the solvent's conjugate base is used, it deprotonates the solvent until the base is entirely consumed, making it ineffective against weaker acids. Conversely, an acid stronger than the solvent's conjugate acid protonates the solvent until the acid is depleted, rendering it ineffective against weaker bases. Essentially, the solvent...

Research

JoVE Journal - Neuroscience

Automatic Identification of Dendritic Branches and their Orientation

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Cited by 1 •

2021

Presented is a computational tool that allows simple and direct automatic measurement of orientations of neuronal dendritic branches from 2D fluorescence images.

Fermi Level

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2024

The Fermi-Dirac function is represented by an S-shaped curve indicating the probability of an energy state being occupied by an electron at a given temperature. The Fermi level is the energy level at which there is a fifty percent chance of finding an electron, and it is positioned between the lower-energy valence band and the higher-energy conduction band. At absolute zero temperature, electrons fill all energy states up to the Fermi level, leaving upper states empty. As the temperature rises,...

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