Related Experiment Video
Updated: Apr 27, 2026
10:52
Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior
Published on: April 13, 2016
8.1K
A high frequency resonance gravity gradiometer.
S N Bagaev1, L B Bezrukov2, N L Kvashnin1
1Laser Physics Institute SB RAS, Novosibirsc, Russia.
The Review of Scientific Instruments
|July 3, 2014
Summary
A novel opto-acoustical gravitational detector, OGRAN, uses optical interferometry to detect gravity gradients. Its high sensitivity aims to find rare gravitational pulses coinciding with neutrino signals.
Area of Science:
- Gravitational wave detection
- Experimental physics
- Astrophysics
Background:
- Gravitational wave detectors are crucial for understanding cosmic events.
- Existing bar detectors have limitations in sensitivity and frequency range.
- The Baksan Neutrino Observatory provides a unique environment for sensitive experiments.
Purpose of the Study:
- To describe the OGRAN (large scale opto-acoustical gravitational detector) setup.
- To introduce a novel interferometric readout for gravitational detectors.
- To enable the search for rare gravitational events in coincidence with neutrino signals.
Main Methods:
- Utilizing an optical interferometric readout system.
- Operating a large-scale opto-acoustical gravitational detector (OGRAN).
- Achieving sensitivity limited by Brownian noise at room temperature near 100 Hz bandwidth.
Main Results:
- A new gravitational detector setup, OGRAN, has been successfully designed and described.
- The detector employs optical interferometry for enhanced sensitivity to gravity gradients.
- Sensitivity is comparable to Brownian noise limits at room temperature.
Conclusions:
- OGRAN represents a significant advancement in gravitational wave detection technology.
- The detector's sensitivity and design are suitable for searching for rare, high-frequency gravitational events.
- Coincident detection with neutrino signals (BUST) will be explored at the Baksan Neutrino Observatory.
More Related Videos
13:59Reduced-gravity Environment Hardware Demonstrations of a Prototype Miniaturized Flow Cytometer and Companion Microfluidic Mixing Technology
Published on: November 13, 2014
13.0K
08:23A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
Published on: September 30, 2019
5.5K
Related Concept Videos
01:05Gravimetry: Overview
11.7K
Gravimetric analysis is a quantitative method where the analyte is isolated and weighed directly or after conversion into a substance of known composition. Gravimetric analysis can be classified as precipitation, electrogravimetry, volatilization, and particulate gravimetry, based on the method used to isolate the analyte.
In precipitation gravimetry, the analyte is converted into a precipitate and weighed. For example, the silver content in a sample can be estimated by precipitating and...
In precipitation gravimetry, the analyte is converted into a precipitate and weighed. For example, the silver content in a sample can be estimated by precipitating and...
11.7K
01:12Measuring Acceleration Due to Gravity
1.4K
Consider a coffee mug hanging on a hook in a pantry. If the mug gets knocked, it oscillates back and forth like a pendulum until the oscillations die out.
A simple pendulum can be described as a point mass and a string. Meanwhile, a physical pendulum is any object whose oscillations are similar to a simple pendulum, but cannot be modeled as a point mass on a string because its mass is distributed over a larger area. The behavior of a physical pendulum can be modeled using the principles of...
A simple pendulum can be described as a point mass and a string. Meanwhile, a physical pendulum is any object whose oscillations are similar to a simple pendulum, but cannot be modeled as a point mass on a string because its mass is distributed over a larger area. The behavior of a physical pendulum can be modeled using the principles of...
1.4K
01:03Precipitation Gravimetry
12.6K
Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
12.6K
01:20Variation in Acceleration due to Gravity near the Earth's Surface
1.9K
An object's apparent weight is its weight measured by a spring balance at its location. It is different from its true weight, the force with which the Earth pulls it, because of the Earth's rotation. Mathematically, an object's apparent weight equals its true weight minus the centripetal force that keeps it in a circular motion along with the Earth's surface every 24 hours.
The difference between the true and apparent weights is proportional to the square of the Earth's...
The difference between the true and apparent weights is proportional to the square of the Earth's...
1.9K
01:14NMR Spectrometers: Resolution and Error Correction
991
When magnetic nuclei in a sample achieve resonance and undergo relaxation, the signal detected in NMR is an approximately exponential free induction decay. Fourier transform of an exponential decay yields a Lorentzian peak in the frequency domain. Lorentzian peaks in an NMR spectrum are defined by their amplitude, full width at half maximum, and position, where the peak width is governed by the spin-spin relaxation time alone. In real experiments, however, the applied magnetic field is rendered...
991
01:27Gravity between Spherical Bodies
7.1K
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...
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...
7.1K