2018-05-16 点击次数:
Tips: to reduce reaction time: Light gate/ Video are preferred;light gate connected to time logged to calculate time
Balance–Mass
Tips: v=L/t
Newton meter–force
Protractor–angle
Voltmeter–Voltage
Ammeter–Current
Electric field strength:
Tips: 测量周期多取几个周期,一般10个周期,再取平均值。
Microphone connected to C.R.O - Sound intensity
LDR–Light intensity
Diffraction experiment/ double-slit experiment – Wavelength
Tips: use dsinθ=nλ or ax/D=nλ
Hall Probe – Magnetic flux density (vice versa)
Tips: Hall probe must be perpendicular to the magnetic field;Hall probe connected to voltmeter
除了描述测量仪器之后,还要改变independent variable,并测量dependent variable的变化,因此在第二部分也要对如何改变independent variable进行描述,比如: