What this topic covers
Particles and radiation has 2 subtopics:
- Particles
- Electromagnetic radiation and quantum phenomena
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AS Level AQA Physics · Topic 2 of 5
Particles and radiation – AS Level AQA Physics revision notes
Choose a subtopic. Particles and radiation covers Particles and Electromagnetic radiation and quantum phenomena in AS Level AQA Physics. 15 lessons in 2 subtopics.
Revise Particles and radiation for AS Level AQA Physics, including Particles and Electromagnetic radiation and quantum phenomena.
15
Lessons
2
Subtopics
Particles and radiation lessons by subtopic
15 lessons, grouped by subtopic.
Particles
- Particles and Antiparticles
- Photons and the Planck Constant
- Annihilation and Pair Production
- Conservation Laws in Particle Physics
- Quark Character Changes in Beta Decay
- The Strong Nuclear Force
- Alpha and Beta Decay
- Quarks and Antiquarks: Properties and Combinations
Electromagnetic radiation and quantum phenomena
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Frequently asked questions
What is Particles and radiation?
Particles and radiation covers Particles and Electromagnetic radiation and quantum phenomena in AS Level AQA Physics. 15 lessons in 2 subtopics.
What is a photon?
A photon is a discrete quantum, or packet, of electromagnetic radiation. The Photons and the Planck Constant notes cover this in full.
What is an alpha particle?
An alpha particle is identical to a helium-4 nucleus: two protons and two neutrons, written ⁴₂He. The Alpha and Beta Decay notes cover this in full.
What happens to a nucleus in alpha decay?
The nucleus emits an alpha particle, a helium-4 nucleus of two protons and two neutrons, so its nucleon number falls by 4 and its proton number by 2. The Alpha and Beta Decay notes cover this in full.
What is the de Broglie wavelength equation?
The de Broglie wavelength equation is λ = h / mv, where h is the Planck constant (6.63 × 10⁻³⁴ J s), m is the particle's mass in kg and v is its speed in m s⁻¹. The De Broglie Wavelength and Diffraction notes cover this in full.
What is an electron volt?
An electron volt (eV) is the energy transferred to, or gained by, a single electron when it is accelerated through a potential difference of one volt. The The Electron Volt and Energy Conversions notes cover this in full.
What is a positron?
A positron is the antiparticle of the electron, written e⁺. The Particles and Antiparticles notes cover this in full.
Do photons have mass?
Photons have zero rest mass and travel at the speed of light in a vacuum. The Photons and the Planck Constant notes cover this in full.
Is light a wave or a particle?
Light behaves as both a wave and a particle, depending on the experiment. The Wave-Particle Duality: Introduction notes cover this in full.