🔌Electromagnetism is a fundamental force that holds atoms and matter together.
💡Electric and magnetic fields interact to generate and sustain electromagnetic waves.
🌐The electromagnetic spectrum consists of visible light and invisible waves with diverse applications.
💥Electromagnetism powers the Earth's geodynamo, creating magnetic fields that protect us.
🧲Electromagnetism is essential for daily applications and medical technologies.
What is electromagnetism?
—Electromagnetism is a fundamental force of nature that involves the interactions between electric and magnetic fields.
What is the electromagnetic spectrum?
—The electromagnetic spectrum is a range of frequencies that includes visible light and invisible waves with various applications.
How does electromagnetism affect our daily lives?
—Electromagnetism powers many technologies we use daily, from electricity and electronics to communication systems.
How does electromagnetism generate the Earth's magnetic field?
—Under the Earth's surface, liquid metals generate electric currents, which in turn produce magnetic fields, creating the Earth's magnetic field.
What are some medical applications of electromagnetism?
—Electromagnetism plays a crucial role in medical imaging technologies such as MRI and in therapeutic applications like radiation therapy.
00:02Electromagnetism as a fundamental force of nature.
00:23The branch of physics that studies electric and magnetic fields.
00:37Electric charges and their interactions.
00:53The transmission of electromagnetic energy and the electromagnetic spectrum.
01:20Visible light and invisible electromagnetic waves.
01:43Medical applications and uses of electromagnetic waves.
02:10The Earth's geodynamo and the generation of its magnetic fields.
02:42The protective layer around the planet and the impact of electromagnetism on Earth.
