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- A black hole does not have a surface, like a planet or star, instead, it is a region of space where matter has collapsed in on itself such that the pull of gravity is so strong that, once captured, nothing — not even light — is able to escape. This is remarkable when you think about how fast light can travel (nothing can travel faster).
medium.com › @iauastroedu › classroom-activities-about-black-holes-quick-reference-guide-chapter-1-2d5432a5a9f2Classroom activities about black holes — Quick reference ...
“For students of gravity, black holes are amongst the most interesting objects to study because gravity is the dominant force there — in fact, it is infinitely strong! Then there are...
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Feb 15, 2023 · Venture into the world of black holes and discover amazing facts through animations, artists' images, vivid descriptions, and classroom tips for educators.
May 30, 2024 · Black holes are studied by astronomers, physicists, and astrophysicists, who use a combination of theory and observations to construct what black holes might look like, and in rare cases,...
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Each working group will need (figure 3): 1. A light elastic bandage used for muscular injuries (e.g. Tubifix, sold in chemists’ shops), the largest ones available (used for the thorax) 2. A small marble 3. A very heavy ball (such as those used in games of boules, bocce or pétanque) 4. A pair of sharp scissors.
Cut a piece of elastic bandage about 40 cm long. If it is tubular, you will need to cut it open on one side.Ask several students to stretch the bandage horizontally until it becomes taut, to represent two-dimensional space.Place the marble on the bandage, and make it roll across the surface of the bandage. Its path should be a straight line, similar to that of a light ray travelling through space.Place the heavy ball on the bandage, and you will see how it deforms the fabric of space. Space becomes curved around the heavy mass.What happens when you decrease the speed of the marble? Why? When the speed of the marble is high enough, the marble has enough energy to escape the gravity of the black hole. However, if the speed...What happens when you use a heavier large ball? What about a heaver marble (figure 6)? Because more massive objects create a stronger gravitational force, in both cases you will need to throw the m...How would you be able to tell if there is a black hole somewhere by observing the motions of the stars? If a black hole becomes massive enough, stars that pass nearby will become trapped in its gra...Why is it important to study black holes? What is there to be learned from the EHT observations? As a scientific collaboration, the aim of the EHT is not only to prove the existence of black holes, but also to understand the physics of black holes and their surrounding environments.
Aug 13, 2018 · Good activity for students to investigate size, mass, density and how they relate to black holes. Provides a good understanding of how a black hole’s mass determines the radius of its event ...
Sep 20, 2021 · A black hole has gravity so strong, even light can’t escape. Viewing a faraway object that traps light is no easy task. So even though astronomers have gathered plenty of evidence to confirm that black holes exist, until recently, they had never actually seen one.
