Physics Flashcards
LIGHT
Light is a form of energy that travels in a specialised wave known as electromagnetic waves.
THE LAW OF REFLECTION
angle of incidence = angle of reflection
i = r
PROPERTIES OF AN IMAGE PRODUCED BY A PLANE MIRROR
- Upright
- Same size and the object
- Laterally inverted
- Virtual - light rays do not meet to produce it
- Appears to be as far inside the mirror as the object is in front
REFRACTION is when…
…Light passes at an angle from one medium to another, and changes direction.
REFRACTION is caused by…
…Light travelling at different speeds through different substances.
LIGHT BENDS ______ THE NORMAL WHEN ENTERING A A SUBSTANCE WITH A HIGHER REFRACTIVE INDEX
Towards
HollywoodLosAngeles
LIGHT BENDS ______ THE NORMAL WHEN ENTERING A A SUBSTANCE WITH A LOWER REFRACTIVE INDEX
Away
FREQUENCY
The number of waves produced each second
Measured in Hertz - Hz
THE WAVE EQUATION
v = fλ
LIGHT THAT BENDS THE LEAST AND THE MOST THROUGH A PRISM
Least - Red
Most - Violet
THE SMALLER WAVELENGTH (HIGHER FREQUENCY) THE MORE LIGHT SLOWS DOWN/SPEEDS UP?
Slows down
EXECTROMAGNETISM IS THE INTERACTION THE OCCURS BETWEEN ____ + ____ FEILDS?
Magnetic and electric
Electromagnetic waves travel as two interconnected electric and magnetic fields moving as transverse waves at right angles to each other
(Kind of just a fact)
SPEED OF LIGHT
3.0 x 10(to the power of 8)m/s
WHAT HAS THE SHORTEST WAVELENGTH, HIGHER FREQUENCY, AND HIGHER ENERGY?
Gamma rays
