Twenty scientific instruments that have made great contributions to human progress
Modern society is inseparable from electricity. When you enjoy the convenience brought by lights, air conditioners, telephones, and the Internet every day, have you ever wondered how scientists figure out the principles? In 'The Prologue of Electrical AgeUsing scientifically accurate and high-quality computer graphics (CG), we try to restore the style of these historical instruments, and give their working principles and important scientific discoveries related to them. The final form of our plan for 'The Prologue of the Electric Age' is a popular science book with both pictures and texts and an interactive iPad App. We are currently looking for co-authors for the project. If you are an experienced science writer and are interested in this project, please contact us (liangyan@novoedu.com). The following is a preview of the project: 'The Prologue of the Electrical Age' is divided into 8 themes, introducing nearly 20 important historical instruments, related scientists and their important scientific discoveries. Below is a preview of 10 instruments. ? The electrostatic electroscope invented by William Gilbert in 1600 is the earliest electrostatic detection device. Gilbert was the first scientist to distinguish electrical and magnetic phenomena. ? The triboelectric device invented in 1663 by Otto von Gulick. After rubbing the yellow sulfur ball with your hands, the sulfur ball can attract small objects such as feathers. At the time, Curic did not know the nature of his experimental phenomenon. He believed that the attraction of sulfur balls to other objects was similar to the gravity of the earth. ? An electrostatic generator invented by Jean-Antoine Nolay in 1753. Rubbing the rapidly rotating hollow glass sphere with your hands or fur can generate a large amount of static charge on the glass surface. ? The Leiden bottle was independently invented by von Kleist in 1745 and Musenbrock in 1745-1746. Its name is derived from the city of Leiden, where Musenbroke is located. The Leiden bottle is the earliest capacitor. ? The Leiden bottle battery invented by Benjamin Franklin in 1758. Franklin was the first to use the word Battery to describe battery packs. Before Battery refers to the military platoon. ? Charles Augustine Coulomb invented the torsion balance device in 1785. Through this sophisticated instrument, Coulomb discovered the famous Coulomb's law. ? Alessandro Volt invented the voltaic stack in 1800. This is the first chemical battery that can continuously supply power. The invention of the voltaic stack greatly promoted the progress of electrochemistry and electromagnetics. ? An electromagnetic rotating device invented by Michael Faraday in 1821. This device is the predecessor of all electric motors. ? Michael Faraday discovered the famous electromagnetic induction phenomenon in 1831. The picture above is the first electromagnetic induction generator invented by Picsey in 1832 based on Faraday's research results. ? Heinrich Hertz invented an experimental device for electromagnetic wave detection in 1886. Through this set of experimental devices, Hertz confirmed the existence of electromagnetic waves for the first time and determined that the propagation speed of electromagnetic waves is the same as the speed of light.
The air permeability tester is a high-precision testing instrument designed to evaluate the breathability of PPE materials, textile fabrics, non-woven fabrics, woven fabrics, and industrial filter media. It plays a critical role in quality control, product development, and laboratory research across multiple industries including PPE, textiles, automotive interiors, and filtration systems.
Modern instruments such as the GT-C27 Air Permeability Tester are developed with advanced sensor systems, automated control logic, and multi-standard compatibility to ensure reliable and repeatable results. Complying with global standards such as ISO 9237, ASTM D737, DIN 53887, and GB/T 5453, it guarantees internationally recognized testing performance.
With high automation, accurate pressure sensing, and flexible unit conversion systems, air permeability testing equipment significantly improves testing efficiency while reducing human error. It is widely used in PPE manufacturing, textile engineering, non-woven product development, and industrial filtration quality inspection.
Cut resistance is one of the most critical performance indicators in personal protective equipment (PPE) testing, directly affecting worker safety in high-risk industries such as metal processing, machinery manufacturing, and emergency rescue. The TDM Cut Test Machine GT-KC28 plays a vital role in accurately evaluating the cut resistance of PPE products, including gloves, protective clothing, footwear materials, composite materials, rubber, and industrial textiles.
By adopting high-precision force control systems, intelligent data processing, and stable transmission technology, the GT-KC28 TDM Cut Tester can accurately measure the critical cutting force of materials and ensure excellent repeatability and comparability of test results. Its user-friendly touch-screen operation, comprehensive data storage, USB data export, and built-in thermal printer greatly improve laboratory efficiency and data traceability.
The TDM Cut Test Machine GT-KC28 fully complies with major international and national standards such as ISO 13997, EN 388, ASTM F2992/F2992M, ANSI/ISEA 105, and GB 24541-2022, making it a reliable solution for PPE manufacturers, third-party testing laboratories, and research institutions. Through precise and standardized cut resistance testing, the GT-KC28 helps reduce industrial cutting injuries, supports PPE certification across global markets, and ensures that protective equipment delivers reliable safety performance in real-world applications.
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