A method for the determination of ephedrine in collunarium by high performance capillary electrophoresis with square wave amperometric detection(SWAD)was developed.
Model JO415 DC microammeter is suitable for students to measure weak current and slimelectric potenial in laboratory of middle school and polytechnic school.
Using the Relativity Theory, Ampere s law can be derived from the Colulmb s law, and the induced-electromotance and dynamic-electromotance may be alternated each other.
For electrical properties of MOS capacitors, the C-V curves were obtained by LCR meter (HP4284A), and picoampere meter (HP4140B) was used to measure the J-V curves.
The Japanese Prime Minister Shinzo Abe has urged China to stick to its promise not to militarize space following its test of an anti-satellite missile last week.
The main structure have:Electromagnet and Heng galvanism source, numerical type Gauss account(the effect of Huo Er) and ammeter and volt account, have control dish of illuminate the system.