Search results for “electromagnetism”

The Electromagnetic Spectrum

In this video from NOVA’s Sun Lab, examine how scientists use electromagnetic radiation to learn about the Sun. The process of nuclear fusion in the core of the Sun produces energy in the form of electromagnetic radiation, or light. The wavelength of photons (particles that carry electromagnetic ene

Electromagnetic fields of mobile communications

Being able to make phone calls anywhere and at any time has now become a matter of course. Mobile communications are now part of our everyday lives. But how does mobile communications work? How does it affect humans? How can we protect ourselves from the effects of mobile communications? The video

What do you think about radiation

Wi-Fi, power lines, smartphones – electromagnetic fields accompany us in everyday life. What do people think about the dangers? What do they want to say to those responsible? The Federal Office for Radiation Protection asked people about this in 2019. Here are their answers. Original: "Federal Offi

Mobile communications and health

Is 5G dangerous? What are frequencies in mobile communications all about and what effects do they have on humans? In the video, our colleague Alexander Leymann explains what the electromagnetic fields with which mobile communications actually work. In addition, what effects there are and how all thi

What is a Helmholtz coil

And what can you do with it? In this video, we show you how a Helmholtz coil works and how the BfS Competence Centre for Electromagnetic Fields uses it. #emf #magnetfeld #helmholtz By the way: The exposimeters from the video can also be borrowed: https://www.bfs.de/DE/themen/emf/kompetenzzentrum/ve

Infrared: More Than Your Eyes Can See

The electromagnetic spectrum, spanning energies and wavelengths from radio waves to gamma rays, encompasses all forms of light. Infrared radiation, located in the range just beyond visible light, is emitted by all matter and is very useful in gathering data about Earth and space. In this video segme

How does inductive charging work?

Current from the socket generates a magnetic field. This in turn induces current. As a result, the battery (in a smartphone, for example) can be charged via this magnetic field. This technology originated in the early 19th century. Author: ZDF/Terra X/Sabine Kemper/Martin Schaaf/Maximilian Mohr Tr

Can using your cell phone give you brain cancer?

Is using a cell phone harmful to your health? In the first of a two-parter, Risk Bites looks at the chances of your cell phone giving you brain cancer (spoiler alert: not a lot). Next time -- the more worrisome risk of your phone placing you in a life or death situation. Note: The video refers t