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Gravity lab program simulator#

Gravity Lab is a great tool to explore the laws of nature that govern everything in the universe.

You can toggle a switch to show the acceleration vectors of the bodies, which are proportional to the forces between the bodies and inversely proportional to their masses. According to Newton's law of universal gravitation, every massive body in the universe influences every other massive body, and it works exactly the same in Gravity Lab. The positions and velocities of all the particles are recalculated in real time. It allows you to create dozens of particles with different masses and different initial velocities by simply tapping the screen or drawing a velocity vector.

Gravity lab program simulator#

Utilizing the strengths of both humans and computers, this project will keep LIGO data as clean as possible, and help to unlock more of the gravitational wave universe.Gravity Lab is a gravity simulator for iPad.

Citizen scientists will further classify and characterize these glitch morphologies, determining new glitch categories to be used in the training of the machine learning algorithms.

Machine learning algorithms will learn from this classified dataset to sort through more LIGO data, and choose the most interesting, abnormal glitches to be sent back to the citizen scientists.

Citizen scientists will sift through the enormous amount of LIGO data to produce a robust "gold standard" glitch dataset that can be used to seed and train machine learning algorithms.

One of the innovations of this citizen science project is that citizen scientists and computer algorithms will work in a symbiotic relationship, helping one another to optimally classify and characterize glitches. However, human intuition has proven time and time again to be a useful tool in pattern recognition problems such as this. A family of data analysis algorithms known as machine learning have made huge strides over the past decade in classification problems, though they usually require a large pre-classified dataset to operate effectively. "Classifying glitches using computers has proven to be an exceedingly difficult task. Classifying and characterizing glitches is imperative in the effort to target and eliminate these artifacts, paving the way for more astrophysical signals to be detected. Though the reason for having two detectors separated by thousands of miles is to isolate the detectors from common sources of noise, glitches happen frequently enough that they often can be coincident in the two detectors and can mimic astrophysical signals. Of particular concern are transient, poorly modeled artifacts known by the LIGO community as glitches. To detect gravitational waves even from the strongest events in the Universe, LIGO needs to be able to know when the length of its 4-kilometer arms change by a distance 10,000 times smaller than the diameter of a proton! This makes LIGO susceptible to a great deal of instrumental and environmental sources of noise.

"LIGO is the most sensitive and complicated gravitational experiment ever built. If you still want a little more information, here's what the creators of Gravity Spy say about this exciting opportunity:

If you want to help LIGO continue to make scientific history, then Gravity Spy is the Citizen Science program for you! Click, SIGN ME UP FOR GRAVITY SPY! to get started today! Glitches make finding the real thing even more difficult than it already is! Nevertheless, they are an unfortunate fact of life for LIGO, so identifying the different kinds of glitches that appear in the interferometer data is crucial for LIGO scientists to be able to distinguish between annoying blips and signals from space! LIGO's newest Citizen Science Program, Gravity Spy, will enable anyone around the world to help LIGO scientists and LIGO computers become better and faster at finding the telltale traces of gravitational waves.Īs a "Gravity Spy" participant, you will look at real LIGO data in search of 'glitches', unwanted hiccups in the signal that can sometimes be confused for or mask out gravitational waves. LIGO invites everyone to help improve its search for gravitational waves!