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Processor and Computer Hardware

OCR A: A-Level Computer Science Section 1 - Components of a Computer

The Processor The processor refers to any electronic component capable of performing mathematical...

Updated 1 month ago by Asad

Thermal Physics

OCR A: A-Level Physics Module 5

Temperature Thermal equilibrium describes the equal transfer of thermal energy in and out of a sy...

Updated 1 month ago by Asad

Cosmology

OCR A: A-Level Physics Module 5

Structure of the Universe Galaxies are clusters of millions and billions of stars. They are const...

Updated 2 months ago by Asad

Network Security and Threats

OCR A: A-Level Computer Science Section 5 - Networks and Web Technologies

Threats Viruses A virus is a piece of malicious software that has the ability to self-replicate. ...

Updated 2 months ago by Asad

6.5 - Medical Imaging

OCR A: A-Level Physics Module 6

Xray production Electrons are emitted into a vacuum tube via thermionic emission. An external pow...

Updated 2 months ago by Admin

A Level Core Practicals

OCR A: A-Level Physics

A-Level Physics Practicals This document covers the core practical procedures across the A-Level ...

Updated 2 months ago by Asad

6.4 - Nuclear and Particle Physics

OCR A: A-Level Physics Module 6

The Nuclear Atom The alpha particle scattering experiment involved the firing of alpha particles ...

Updated 2 months ago by Asad

Structure of the Internet and Internet Communication

OCR A: A-Level Computer Science Section 5 - Networks and Web Technologies

The Internet The internet is a network of networks set up to allow computers to communicate with ...

Updated 3 months ago by Asad

Section 10 - Computational Thinking

OCR A: A-Level Computer Science

Abstraction Thinking Ahead Thinking Procedurally Thinking Logically & Concurrently Backtracking B...

Updated 3 months ago by Asad

Section 7 - Data Structures

OCR A: A-Level Computer Science

Storing "lists" of data A static data structure is fixed in size. A dynamic data structure has ...

Updated 4 months ago by Asad

4.5 - Quantum Physics

OCR A: A-Level Physics Module 4

Photons A quantum (plural: quanta) is a small discrete unit of energy. A photon is a quantum of...

Updated 4 months ago by Asad

4.4 - Waves

OCR A: A-Level Physics Module 4

Wave Motion Waves transfer energy from one place to another without any net transfer of matter. ...

Updated 4 months ago by Asad

4.3 - Electrical Circuits

OCR A: A-Level Physics Module 4

Kirchoff's Laws The sum of currents entering a junction in a circuit is equal to the sum of cu...

Updated 5 months ago by Asad

4.2 - Energy, Power, and Resistance

OCR A: A-Level Physics Module 4

Potential Difference and EMF Potential difference is the energy transferred per unit charge fr...

Updated 5 months ago by Asad

4.1 - Charge and Current

OCR A: A-Level Physics Module 4

Key info and definitions Electric Circuit Components Junction of conductors: Allows current...

Updated 5 months ago by Asad

6.3 - Electromagnetism

OCR A: A-Level Physics Module 6

Definitions and Core Info A magnetic field is a field in which a charged particle experiences a ...

Updated 5 months ago by Asad

6.2 - Electric Fields

OCR A: A-Level Physics Module 6

Definitions and Core Info An electric field is a region around a body in which other charged bod...

Updated 5 months ago by Asad

6.1 - Capacitors

OCR A: A-Level Physics Module 6

Core Info and Definitions A capacitor is a circuit component that stores charge in a circuit by ...

Updated 5 months ago by Asad

Relational Databases and Normalisation

OCR A: A-Level Computer Science Section 4 - Exchanging Data

Core Info and Definitions A relational database contains tables, making use of relations between...

Updated 5 months ago by Asad

Database concepts

OCR A: A-Level Computer Science Section 4 - Exchanging Data

Modelling Core info and definitions When creating a database, you must identify the entities. A...

Updated 5 months ago by Asad