Why do hash types create a hash of a different length?

Related questions

1. How is md5 checksum calculated?
2. What is md5 salted hash?
3. Why many of the hash types create a hash of a different length?
4. How long is password salt?
5. Where are password hashes stored?
6. What makes a hash a hash?
7. What is the purpose of the Secure Hashing Algorithm?
8. How a password is hashed?
9. What is the purpose of hashing?
10. Can sha256 Hash be reversed?

Tags

1. #there
2. #possible
3. #collision
4. #exact
5. #function
6. #makes
7. #values
8. #fewer
9. #because
10. #blobs
11. #collisions
12. #instance
13. #produce
14. #produces
15. #creates
16. #different