Valve. Radio was discovered by whom in hindi

know all facts वाल्व। रेडियो का आविष्कार किसने किया था , खोज करने वाले का नाम , Valve. Radio was discovered by in hindi ? question : which scientist invented ‘Valve. Radio’ first time ? answer : famous scientist named ‘Sir J.A Fleming’ is known for discovery of Valve. Radio…