There are also winds that blow from the north, southwards and also those from the south blowing northwards. Anemometers. Anemometers measure the direction of winds. They come in different models but use a similar principle â cups on a bar! It simply works like this: the faster the wind, the faster the cups rotate. The speed of the rotating cups is measured by a speedometer. Another instrument in wind measurement is the wind vane. It involves a pointer mounted on a vertical shaft. When the wind blows, the arm sways until the pointer faces the direction of the wind. These days, there are some really cool technology that meteorologists use to measure air pressure, speeds and direction.
Electrical Bistable Devices Using Organic Materials 73 3. Organic Bistable Materials and DevelopmentTrends In organic electrical materials having certainchemical structure, bistability is observed in which twostable resistance values exist for a single appliedvoltage value.Figure 2 shows an example of thosecharacteristics. forexample, and applying a bias voltage at both ends tomaintain the on/off-state of the bistable device, lightemission can be made continuous even with a struc-ture similar to that of the passive matrix method. Theon/off-state is switched by applying control pulsevoltages that correspond to each switching voltage.
First Man-Made Nanoscale Fractal Molecule Created. Fractals are irregular curves or shapes that retain the same pattern when reduced or magnified. The molecule in the study, for example, is composed of six rings, which are made up of six smaller rings, and so on, Hla said.Snowflakes, broccoli florets or tree bark would be just a few examples from nature.ractals are irregular curves or shapes that retain the same pattern when reduced or magnified. The molecule in the study, for example, is composed of six rings, which are made up of six smaller rings, and so on, Hla said. Snowflakes, broccoli florets or tree bark would be just a few examples from nature.