What is a Nuclear Reactor?

A nuclear reactor generates electricity using the heat energy released from a nuclear fission reaction.

Can You Use Any Radioactive Material as Fuel?

No. This is a common misconception worth clearing up.

Radioactive and fissile are two very different things:

• Radioactive → The nucleus is unstable and decays, emitting radiation (alpha or beta particles)
• Fissile → The nucleus can be split by a neutron AND releases more neutrons to sustain a chain reaction

A reactor needs fissile material specifically — not just any radioactive material.

Suppose you had a raw video in very good quality (at 20Mbps bitrate). Obviously, you can’t stream this video to end-user where network bandwidth and speed is limited. So, you transcode this video at various bitrates 2Mbps, 1Mbps, …

Compared to original video, quality of this transcoded video will be less. We can see it with naked eye. At around 2-3Mbps, we won’t notice any difference but as bitrate starts going below 1Mbps, the difference is significantly noticeable.

If I have a digitally signed document, how do I verify if it is really signed ? How can I ensure that it is more than just a green tick photoshop ?

What if the amount of Rs. 10000 in document is tampered and made Rs. 100000 after I signed it ? What exactly happens when we digitally sign a document ? How secure is this system ?

Say I want to sign a document then two keys will be created.