lesson 8

I think this lesson slides are quite good as they contained very less information in each slide and gave ample time to copy down and digest the info. This would be helpful if all student teachers are like this. I like their Kahoot as they had necessary information that could let us sink deeper into the topic.

black holes are a region of spacetime which gravitational effect so strong that nothing can escape it. No force can keep a dead star from collapsing under the influence of gravity. Most black holes form from the remnants of a large star that dies in a supernova explosion. Black holes have a relativistic jet, singularity, an accretion disc and a photon sphere. Stellar black holes are formed from the deaths of individual stars. They are small compared to other black holes but they are very dense. The intermediate mass black holes are too high to have formed by the collapse of a single star. Merging of multiple high-density celestial bodies, such as could have been a reason to form. The stellar chain reaction is the collision of several stars. It could have happened through a dense start cluster. The primordial black hole formed right after the Big Bang, when most of the universe was compacted into a few cubic centimetres, making it easy for black holes to form. Supermassive black holes are black holes with a mass higher than 100000 solar masses. It exists in the centre of the galaxy.

a wormhole is a tunnel that connects two black holes/two points in space time. The Casimir effect shows that quantum field energy allows energy density to be neg. Inter-universe wormholes allow you to travel across universes but they are least likely to exist.