Visible light goes "Roy G Bv": Red Orange Yellow Green Blue Violet• Remembering How to remember the spectrum? This is called the "wave—particle duality" To his surprise, he found that this region had the highest temperature of all
That is 300 million meters every second, or:• Photons have no mass, but each photon has a specific amount of energy that depends on its frequency number of vibrations per second As Photons Electromagnetic radiation behaves as waves, but also behaves as packets of energy called Photons

Example: From The Sun A lot of the the radiation from the Sun gets reflected or absorbed by the atmosphere.

الطيف الكهرومغناطيسي وأسراره الفيزيائية
Now try that again but take 20 seconds to cross the room
ما هو الإشعاع الكهرومغناطيسي ؟
taking long steps "long wavelength"• Example: Which has more energy, red light or blue light? Energy and Ionization Gamma rays, x-rays, and some ultraviolet waves have such high energy that they are "ionizing," meaning they can knock electrons out of atoms
حل وحدة الطيف الكهرومغناطيسي علوم الصف التاسع
Wavelengths vs Frequency Activity Try this: Walk across the room in 5 seconds:• Einstein wrote about it: "It seems as though we must use sometimes the one theory and sometimes the other, while at times we may use either
Rays X-rays and gamma rays at the high energy end To remember the energy and danger levels, think "Radio is low, but rays are like razors" Energy A higher frequency rate of vibration has shorter wavelength and more energy
But how waves interact with matter depends on their energy and the type of matter Example: Our Bodies• Electromagnetic Spectrum Electromagnetism It is called "electromagnetism" because electricity and magnetism are linked: A changing electric field produces a magnetic field, a changing magnetic field produces an electric field, Here is the full electromagnetic spectrum: Higher frequency rate of vibration has more energy and shorter wavelength

So electricity and magnetism are linked in an ongoing dance.

حل وحدة الطيف الكهرومغناطيسي علوم الصف التاسع
تعريف الطيف الكهرومغناطيسي
So telescopes like the NuSTAR X-ray telescope have to be in orbit
ما معنى الطيف الكهرومغناطيسي وتعريفه .