/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 27 What is gravitational lensing? W... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 24: Problem 27

What is gravitational lensing? Why don't we notice the gravitational lensing of light by ordinary objects on Earth?

Short Answer

Expert verified
Gravitational lensing is an effect based on Einstein's theory of general relativity where light from a distant celestial object is bent or distorted when passing by a massive object, causing apparent magnification or distortion. The reason we do not observe this effect with ordinary objects on Earth is because they do not possess sufficient mass to create a gravitational field intense enough to noticeably alter the path of light.

Step by step solution

01

Understanding Gravitational Lensing

Gravitational lensing is an effect of the theory of general relativity. It is the bending and distortion of light by gravity. When light from a distant celestial object, like a star or a galaxy, passes by a massive object on its way to the observer, the gravity of the intervening massive object can bend or distort the path of light, resulting in the phenomenon known as gravitational lensing. This can cause the celestial object to appear magnified or distorted from the observer鈥檚 point of view.
02

Reason we don't observe it on Earth

The reason we do not notice the gravitational lensing effect of light by ordinary objects on Earth is due to the fact that the intensity of gravitational field to cause a perceivable lensing effect is tremendously high. Ordinary objects on Earth do not produce a gravitational field intense enough to significantly bend the path of light. This is also due to the inverse square law governing gravitational forces, the strength of the gravitational lensing effect reduces greatly with distance. It takes a massive object like a star, galaxy or a black hole or anything of equivalent mass to produce a noticeable lensing effect.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

The Earth is composed principally of heavy elements, such as silicon, nickel, and iron. Would you be likely to find such planets orbiting stars in the disk of a spiral galaxy? In the nu-cleus of a spiral galaxy? In an elliptical galaxy? In an irregular galaxy? Explain your answers.

Explain why the apparent shape of an elliptical galaxy may be quite different from its real shape.

How did the discovery of the Hubble Law reinforce the idea that the spiral "nebulae" could not be part of the Milky Way?

On what grounds do astronomers think that in the past, spiral galaxies were more numerous in rich clusters than they are today? What could account for this excess of spiral galaxies in the past?

What measurements do astronomers make to construct threedimensional maps of the positions of galaxies in space?
See all solutions

Recommended explanations on Physics Textbooks

Oscillations

Read Explanation

Further Mechanics and Thermal Physics

Read Explanation

Fields in Physics

Read Explanation

Electromagnetism

Read Explanation

Electrostatics

Read Explanation

Linear Momentum

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.