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Bernoulli's Principle: Applications

Bernoulli's Principle: Applications

There are many devices and situations in which fluid flows at a constant height and so can be analyzed using Bernoulli's principle. These devices include, but are not limited to, entrainment devices and fluid flow measuring devices.
Entrainment devices use a high fluid speed to create low pressures and, thus, entrain one fluid into another. Some examples of these devices are given below:

Design Example: Application of Archimedes' Principle

Design Example: Application of Archimedes' Principle

Archimedes' principle is fundamental in analyzing the buoyant force and stability of floating bodies. In this example, a wooden block with a rectangular section floats in seawater. Based on the block's dimensions, its specific gravity and the specific weight of seawater are used to find the volume of water displaced and the center of buoyancy.
The volume of seawater displaced by the block is determined by first calculating the block's weight. This is done by multiplying the...

The Uncertainty Principle

The Uncertainty Principle

Werner Heisenberg considered the limits of how accurately one can measure properties of an electron or other microscopic particles. He determined that there is a fundamental limit to how accurately one can measure both a particle’s position and its momentum simultaneously. The more accurate the measurement of the momentum of a particle is known, the less accurate the position at that time is known and vice versa. This is what is now called the Heisenberg uncertainty principle. He...

Hardy-Weinberg Principle

Hardy-Weinberg Principle

Diploid organisms have two alleles of each gene, one from each parent, in their somatic cells. Therefore, each individual contributes two alleles to the gene pool of the population. The gene pool of a population is the sum of every allele of all genes within that population and has some degree of variation. Genetic variation is typically expressed as a relative frequency, which is the percentage of the total population that has a given allele, genotype or phenotype.

The Pauli Exclusion Principle

The Pauli Exclusion Principle

The arrangement of electrons in the orbitals of an atom is called its electron configuration. We describe an electron configuration with a symbol that contains three pieces of information:

Confocal Fluorescence Microscopy

Confocal Fluorescence Microscopy

Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...

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Related Experiment Video

Updated: Jan 26, 2026

Reconstruction of Single-Cell Innate Fluorescence Signatures by Confocal Microscopy

Reconstruction of Single-Cell Innate Fluorescence Signatures by Confocal Microscopy

Published on: May 27, 2020

Principles and application of fluorescence microscopy.

D Coling¹, B Kachar

¹University of California Berkeley, Berkeley, California, USA.

Current Protocols in Molecular Biology

|February 12, 2008

Summary

This summary is machine-generated.

This overview covers fluorescence microscopy principles and practical applications. It details essential components like probes, filters, light sources, and objectives for advanced imaging.

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Last Updated: Jan 26, 2026

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Area of Science:

Microscopy
Biophysics
Cell Biology

Background:

Fluorescence microscopy is a vital tool in biological sciences.
Understanding its principles is crucial for effective imaging.

Purpose of the Study:

To provide a comprehensive overview of fluorescence microscopy.
To discuss key components and techniques for optimal image acquisition.

Main Methods:

Discussion of fundamental fluorescence principles.
Detailed examination of optical components (probes, filters, objectives).
Explanation of image quality factors (resolution, point-spread function).

Main Results:

Covers multi-dye fluorescence and live-cell imaging.
Includes practical aspects of immunolabeling techniques.
Highlights the importance of light sources and filter sets.

Conclusions:

Effective use of fluorescence microscopy requires understanding its core principles and components.
This overview serves as a guide for researchers utilizing fluorescence imaging techniques.