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\nGravitational Lensing: What It Is And How It Is Helping Us Discover New Galaxies\n

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\n\nPublisher:\n\nScience ABC\n\n\n
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\nGravitational lensing occurs when a huge amount of matter, like a star, galaxy, or cluster of galaxies, creates a powerful gravitational field around it, strong enough to bend the light coming from distant galaxies (behind them). Roots...\nGravitational lensing occurs when a huge amount of matter, like a star, galaxy, or cluster of galaxies, creates a powerful gravitational field around it, strong enough to bend the light coming from distant galaxies (behind them). Roots of gravitational lensing lie in Einstein theory of relativity which states that massive bodies warp the space around it. Thereby the light passing through this warped space curves near massive celestial bodies. Depending upon the position of emitting, lensing and observing body, gravitational lensing may distort, magnify or lead to multiple occurrences of the same object in different places.

Leveraging the concept of gravitational lensing, a technique called microlensing is developed which is helping us in discovering new galaxies and dark matter. Einstein ring is a beautiful phenomena observed using microlensing which we have illustrated in this video using animations. Thus, Einstein's ground-breaking work on general relativity in 1915 has paved the way for astronomers to continue studying the very structure of the Universe leveraging the power of gravity!

Table of Contents:
Introduction- 0:00
Gravitational lensing- 1:13
Einstein ring- 3:59
Dark matter- 4:35
Conclusion- 5:30\n
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Resource Details

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Educator Rating
Not yet Rated
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Media Length
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5:53
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Grade
Pre-K - Higher Ed
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Subjects
Science
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Media Type
Instructional Videos
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Source:
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\nScienceABC\n\n
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Date
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2021
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Language
English
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Audiences
For Teacher Use
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Fine Print: Educational Use
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Concepts

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animation, black holes, matter, galaxies, space, eyes, light, helping, gravity, time, stars, mass
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gravitational lensing, what is gravitational lensing, how gravitational lensing works, who discovered gravitational lensing, is gravitational lensing real, distant galaxies, science, curiosity, gravitational lens, einstein, can gravity bend light, illustration of gravitational lensing, gravitational lensing occurs because, gravitational lensing occurs when, gravity lens, is light affected by gravity, gravitational lensing dark matter, how does gravity bend light, huge amount, star galaxy, general relativity, dark matter, einstein ring, distorts, lens, simple, type, view, universe, cluster, theory, world, source, observer, invisible
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Classroom Considerations

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Best For: Explaining a topic
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