physics part 6
What are the types of potential energy?
Gravitational potential energy and elastic potential energy
Why will a more powerful car reach higher speeds faster than a less powerful car?
Because it does the work (energy) more quickly
What energy conversion happens in an x-ray tube?
Receives electrical energy and converts it into heat energy (99%) and x-radiation (1%)
How is x-radiation created?
By taking the electrons and converting it into photons
What does the cathode in an x-ray tube do?
Boils off electrons by thermionic emission
What happens in the anode in the x-ray tube?
Electrons strike to produce x-rays
Why is a glass envelope more prone to failure?
Tungsten filament vapourises and coats on the surface of glass, altering the electric potential of the tube, resulting in the formation of electric arc, causing tube failure
Why is a larger filament preferred?
Produces high intensity x-rays with quick exposures, image will be less influenced by movement artefacts