Electronic Digital Level

An electronic digital level is a precision instrument that measures and displays the inclination or slope of a surface relative to gravity, providing more quantitative readings than a traditional bubble level. Its internal tilt sensors, typically based on accelerometer technology, detect the direction of gravitational acceleration; onboard electronics convert this signal into an angle, slope percentage, or height difference, often with digital calibration and visual or audible indicators. In engineering, electronic digital levels support construction alignment, structural inspection, surveying, machinery installation, and quality control, helping users verify tolerances, document measurements, and improve accuracy in field and laboratory work.

Electronic Digital Level - Related Videos

Research

JoVE Journal - Engineering
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Single-Digit Nanometer Electron-Beam Lithography with an Aberration-Corrected Scanning Transmission Electron Microscope

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Cited by 5 •

2018

We use an aberration-corrected scanning transmission electron microscope to define single-digit nanometer patterns in two widely-used electron-beam resists: poly (methyl methacrylate) and hydrogen silsesquioxane. Resist patterns can be replicated in target materials of choice with single-digit nanometer fidelity using liftoff, plasma etching, and resist infiltration by organometallics.

Research

JoVE Journal - Biochemistry
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Micropatterning Transmission Electron Microscopy Grids to Direct Cell Positioning within Whole-Cell Cryo-Electron Tomography Workflows

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Cited by 29 •

2021

The goal of this protocol is to direct cell adhesion and growth to targeted areas of grids for cryo-electron microscopy. This is achieved by applying an anti-fouling layer that is ablated in user-specified patterns followed by deposition of extra-cellular matrix proteins in the patterned areas prior to cell seeding.

Education

JoVE Core - Biology

Electron Behavior

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2026

Electrons are negatively charged subatomic particles that are attracted to an orbit around the positively-charged nucleus of an atom. They reside in locations that are associated with energy levels called shells and are further organized into sub-shells and orbitals within each shell.Electrons Orbit the NucleusElectrons are found in specific locations outside of the nucleus. The shell in which an electron resides indicates the general energy level of the electron: those closer to the nucleus...

Correlative Light- and Electron Microscopy Using Quantum Dot Nanoparticles

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Cited by 12 •

2016

A method is described whereby quantum dot (QD) nanoparticles can be used for correlative immunocytochemical studies of epoxy embedded human pathology tissue. We employ commercial antibody fragment conjugated QDs that are visualized by widefield fluorescence light microscopy and transmission electron microscopy.

Electron Affinity

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2020

The electron affinity (EA) is the energy change for adding an electron to a gaseous atom to form an anion (negative ion). This process can be either endothermic or exothermic, depending on the element. Many of these elements have negative values of EA, which means that energy is released when the gaseous atom accepts an electron. However, for some elements, energy is required for the atom to become negatively charged, and the value of their EA is positive. Just as with ionization energy,...

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