Junior high school biology grouping experiment box I
Classification:
Junior high school biological experimental box
Product Model:
Grade:
Junior high school biology
Function Description:
The experimental device and experimental operation are simple and convenient. Strong, compact, support stacking, buckle, support multiple boxes at the same time to carry. Contains a foam lining, neat storage, to the equipment adequate protection.
Share products:
Name:Junior high school biology grouping experiment box I
Learning section:junior high school biology
Introduction:The experimental device and experimental operation are simple and convenient. Strong, compact, support stacking, buckle, support multiple boxes at the same time to carry. Contains a foam lining, neat storage, to the equipment adequate protection.
Experiment:It can simulate and demonstrate experiments such as special experiments of junior high school biology grouping examination (digestion of saliva, temporary loading of epidermal cells of onion scale leaves).
Related Products
The Micro-Voltage Sensor is used to measure voltage within -60mV to 60mV. It amplifies the input voltage in order to measure voltage in micro level.
Milli-Current Sensor is used to measure the current within -20 to 20mA in circuit. When current passes through resistor, it will form a tiny electric potential difference at both ends of the resistor. After circuit amplifying, it can accurately measure the current in circuit.
Microphone collects sound signal using to electret microphone. The microphone consists of dust gauze, shell, vibrating diaphragm, spacer, back plate, copper ring, cavity and PCB. The microphone is formed to a capacitor with vibrating diaphragm, spacer and back plate. There are charge on the plastic vibrating diaphragm. Once it is affected by sound, the diaphragm starts vibrating so that distance between diaphragm and back plate changes. The difference Δd is generated. According to C=εS/4πkd, the capacitance will be changed by ΔC. According to C=Q/V (Q is electric charge quantity), due to the change of ΔC, Q is constant so that voltage will change by ΔV. The sound signal is transfer to electric signal. Sensor circuit transfer the electric signal into analog signal under standard range.
Used to measure the temperature of the surface of the object, gas, non-corrosive acid and alkali liquid.
7F, No.1 Building, Tianan Cyber Park, No.36 Yongfeng Road, Qinhuai District, Nanjing, China. (R&D centre)
No.306 Wenchang Road, Yongyang Street, Lishui Disctric, Nanjing, China. (Manufacturing base)
©COPYRIGHT 2023 Jiangsu SWR Science & Technology Co.,Ltd. ALL RIGHTS RESERVED | SEO