Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Detection of Black Holes

Detection of Black Holes

Although black holes were theoretically postulated in the 1920s, they remained outside the domain of observational astronomy until the 1970s.
Their closest cousins are neutron stars, which are composed almost entirely of neutrons packed against each other, making them extremely dense. A neutron star has the same mass as the Sun but its diameter is only a few kilometers. Therefore, the escape velocity from their surface is close to the speed of light.
Not until the 1960s, when the first neutron...

Schwarzschild Radius and Event Horizon

Schwarzschild Radius and Event Horizon

No object with a finite mass can travel faster than the speed of light in a vacuum. This fact has an interesting consequence in the domain of extremely high gravitational fields.
The minimum speed required to launch a projectile from the surface of an object to which it is gravitationally bound so that it eventually escapes the object’s gravitational field is called the escape velocity. The escape velocity is independent of the mass of the object. Merging the idea of escape velocity with the...

Orders of Magnitude

Orders of Magnitude

The order of magnitude of a number is the power of 10 that most closely approximates it. Thus, the order of magnitude estimates the scale (or size) of its value. To find the order of magnitude of a number, take the base-10 logarithm of the number and round it to the nearest integer. Then the order of magnitude of the number is simply the resulting power of 10.
The order of magnitude is simply a way of rounding numbers consistently to the nearest power of 10. This makes doing rough mental math...

Eccentricity of an Ellipse

Eccentricity of an Ellipse

An ellipse is a fundamental conic section defined by the constant sum of distances from any point on its curve to two fixed points, known as the foci. This geometric property can be physically demonstrated using a pencil, string, and two pins. By anchoring the string at both ends and maintaining it taut with a pencil, one can trace the outline of an ellipse.The shape and extent of the ellipse are determined by its eccentricity, e, defined as the ratio of the distance between the center and a...

Gravitation Between Spherically Symmetric Masses

Gravitation Between Spherically Symmetric Masses

The gravitational potential energy between two spherically symmetric bodies can be calculated from the masses and the distance between the bodies, assuming that the center of mass is concentrated at the respective centers of the bodies.

Gravity between Spherical Bodies

Gravity between Spherical Bodies

Newton's law of gravitation describes the gravitational force between any two point masses. However, for extended spherical objects like the Earth, the Moon, and other planets, the law holds with an assumption that masses of spherical objects are concentrated at their respective centers.
This assumption can be proved easily by showing that the expression for gravitational potential energy between a hollow sphere of mass (M) and a point mass (m) is the same as it would be for a pair of extended...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

NOTCH3 -Related Lateral Meningocele Syndrome Presenting as Radiological Copenhagen Syndrome.

American journal of medical genetics. Part A·2025

Same author

A Jovian analogue orbiting a white dwarf star.

Nature·2021

Same author

Do we have the right PROMs for measuring outcomes in lumbar spinal surgery?

European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·2017

Same author

Should we all go to the PROM? The first two years of the British Spine Registry.

The bone & joint journal·2015

Same author

Potential roles of cytokines and chemokines in human intervertebral disc degeneration: interleukin-1 is a master regulator of catabolic processes.

Osteoarthritis and cartilage·2015

Same author

The management of weakness caused by lumbar and lumbosacral nerve root compression.

The Journal of bone and joint surgery. British volume·2012

Search research articles

Related Experiment Video

Updated: Jul 11, 2026

Bringing the Visible Universe into Focus with Robo-AO

Bringing the Visible Universe into Focus with Robo-AO

Published on: February 12, 2013

ASTRONOMY: The Distance to the Large Magellanic Cloud.

Science (New York, N.Y.)

|September 11, 2007

Summary

Determining the distance to the Large Magellanic Cloud (LMC) is crucial for cosmology. New observations of Cepheid and eclipsing binary stars are expected to resolve current disputes about its precise distance soon.

Area of Science:

Astronomy and Astrophysics
Cosmology

Background:

The Large Magellanic Cloud (LMC) is a key celestial object for measuring intergalactic distances.
Accurate distance measurements to the LMC are vital for various cosmological models.

Purpose of the Study:

To address the ongoing dispute regarding the precise distance to the Large Magellanic Cloud.
To highlight the cosmological implications of resolving the LMC distance uncertainty.

Main Methods:

Utilizing observations of Cepheid variable stars to determine luminosity and distance.
Employing eclipsing binary star systems for independent distance calibration.

Main Results:

Current methods for determining the LMC's distance yield conflicting results.

More Related Videos

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Published on: July 30, 2020

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves

Published on: May 10, 2020

Related Experiment Videos

Last Updated: Jul 11, 2026

Bringing the Visible Universe into Focus with Robo-AO

Bringing the Visible Universe into Focus with Robo-AO

Published on: February 12, 2013

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Published on: July 30, 2020

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves

Published on: May 10, 2020

Cepheid and eclipsing binary observations offer promising avenues for resolution.

Conclusions:

Resolving the distance to the LMC is a critical and achievable goal in the near future.
Accurate LMC distance will refine cosmological parameter estimations.