Emits  soundwave through the build-in loudspeaker with frequency of the soundwave is 200Hz~2kHz.

The loudness can be adjustable with 10Hz division. Resolution: 10Hz

Components: Laser Source, Single Slit 0.08mm, Single Slit 0.1mm, Double Slit 0.25mm, Polarizer， Special Bracket

Components:

Base, Specialized Experiment Board，Glass (both ends with wire)

Waveforms: Sine, Square, Triangle. By pressing the Adjuster, select the waveform output orderly. 

llongwill^® smart power supply is the key corollary equipment of llongwill^® Faraday's Law ApparatusⅡ.

Including 23 kinds of standardized experiment circuits.

Used for more than 30 kinds of Electricity experiments.

Components:

Base, Disc, Scale, Terminal, Wire Frame(Length-width ratio is 2:1) , Stand Support, Adapter,

I-type Bracket ,Pointer.

Verify the Joule's Law

Study on the heat effect of electric current 

Components:

Base, Multiturn Coaxial Coils (turns: 200,400,600) , Iron Core, Power Supply, Bilateral Switch, Dedicated Bracket.

Components:

A. Specialized Base, B. Rectangular Coils, C. Connecting Bearing

By using with Micro Current Sensor; Hold high-sensitivity coils and rotate, the induced current produced by cutting geomagnetic field lines can be measured with the micro current Sensor.

Components:

Wire module,  Electronic component module, Measurement module, Load module, Switch module, Power module, Expansion module, Accessories.

Components:

Multi-way switch, Coil, Binding posts, Base board.

The online electronic balance is composed of electronic balance , microUSB data cable  and wireless receiver . The data can be read through its own display screen, and can also be upload to the host computer or mobile device through wired or wireless data transmission.

Components:

Main body, Power adapter, Absorbent paper, Temperature probe, 5mL syringe,  magnet