Some quick questions on discovery.?

Discovery is open to argument. The Americans have a list of American inventors and inventions that are rubbish.

Psychology...Freud elaborated on it.

Radiation X-Ray Madam Curie (a Pole)

Radio activity and the Atom, Sir William Penny and New Zealander, named Rutherford.

The Universe possibly the Egyptians or Greeks. The size of the world was done for an Arab ruler named El Macmoon about 850 AD.

Radio had several people working on it including Oliver Lodge who is reputed to have helped Marconi.

Air Travel is an open question, France, Britain, America.

Electricity was Micheal Faraday he discovered Electricity and Thomas Edison of America developed a light bulb. He discounted AC which was a mistake on his part. A man named Swan put the best and first incandescant lighting on roads in Newcastle on Tyne.