हेनरी गिफर्ड कौन थे

know all facts भाप से चलने वाला हवाई पोत का आविष्कार किसने किया था , खोज करने वाले का नाम , Steam-Powered Airship was discovered by in hindi ? question : which scientist invented ‘Steam-Powered Airship’ first time ? answer : famous scientist named ‘Henri Giffard’ is known for discovery…