另一个有趣的发展是伊隆的超级高铁项目，旨在将大部分公共交通转移到地下。With the use of electromagnetic levitation at historic speeds of 310 kilometers per hour, this train presents the opportunity for a faster, cheaper and cleaner mode of transportation.随着电磁悬浮的使用，它的时速达到了历史上最高...
According to pet psychics, electromagnetic energy surrounds and penetrates everything in the universe, much like the force in "Star Wars." This energy is part of the radio spectrum, but scientists haven't figured out how to detect it. Pet psychics can use energy to contact animals, no matter...
TEMs are the most powerful electron microscopes: we can use them to see things just 1 nanometer in size, so they effectively magnify by a million times or more.How a transmission electron microscope (TEM) works A transmission electron microscope fires a beam of electrons through a specimen to...
Why do they use such high voltages? To explain that, we need to know a little about how electricity travels.As electricity flows down a metal wire, the electrons that carry its energy jiggle through the metal structure, bashing and crashing about and generally wasting energy like unruly school...
While there are several sources to generate electricity, hydro electricity is the most common.Clean and green energygenerated through solar energy and wind energy is the latest trend in generating own electricity forresidential use. FAQs: Electricity Generation ...
the capacitive screens of our smartphones to the resistive interfaces of industrial equipment, touch technology has become an integral part of our digital landscape. As we’ve explored, each type of touch screen has its own strengths and limitations, suited to different use cases and environments...
What Electrical Engineers Do and Why It Matters Because electricity is ordinarily invisible to the naked eye, someone who intends to work as an electrical engineer should be curious about mysterious forces that significantly affect the universe but aren't obvious to a layperson. ...
However, as our ozone layer depletes due to use of chlorofluorocarbons (CFCs), UV levels are increasing. This can lead to health effects like skin cancer [source: EPA]. X-rays: X-rays are very high-energy light waves. We're most familiar with their use in a doctor's office, but X...
Also, SPECT centers are more accessible than PET centers because they do not have to be located near a particle accelerator. Cardiovascular imaging techniques use radioactive substances to chart the flow of blood through the heart and blood vessels. One example of a cardiovascular imaging technique...
It's a good idea to use a basic surge protector, if just to save your UPS. Once you've decided what level of surge protection you need, it's time to shop around for a good unit. In the next section, we'll find out what you should look for when considering different models. ...