Molchanov constructed
meteorograph s, carried by sondes and aircraft and improved pilot observation technique. The radiosonde was first
Kaynak: Pavel MolchanovOffice director of experiments in connexion with the investigation of the upper air, and in 1907 designed a
meteorograph for use with balloons.
Kaynak: William Henry Dinesinstruments for special weather studies, including a
meteorograph used for registering temperature, barometric pressure and relative humidity .
Kaynak: Karl Otto LangeFile:PSM V53 D061 Train of tandem kites bearing a
meteorograph. png | Kites used to fly a meteograph File:PSM V53 D070
Meteorograph.
Kaynak: Radiosonde