capacitor platform

1953~1962

Ballistic pendulum

1953~1962

equal beam balance

1953~1962

power supply

1965

experiment equipment of Oil-drop experiment

1994

capacitor platform

1953~1962

Medal of Guanghua, First Class

1945

electric resistance box

1931~1945

experiment equipment of Oil-drop experiment

1994

Dry Gelatin Plates－Zeng Qin Xi family's portrait

1895~1945

ballpoint

1965

equal beam balance

1953~1962

microbalance

1952~1952

fixed pulley

1953~1962

fixed pulley

1953~1962

spherometer

1953~1962

HORIC Writing file

capacitor platform

1953~1962

Dry Gelatin Plates－Zeng Qin Xi family's portrait

1895~1945

precision resistor

1953