Answer:J.J. Thomson, he was using a high-vacuum cathode-ray tube
Explanation:(I Googled it)
Answer: let me figure it out rlly quick
Explanation:
Hey <span>wademcelroy2005, thanks for submitting your question to Brainly!
The answer to your question is </span><span>B:Radiation moves from a warmer object to a cooler object</span>