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Title: Light and Sound Notes (Physics)
Description: These notes cover all about Light and Sound (Physics) in-depth. They are perfect if you need cheap, reliable notes to study for an exam or test, or just for good understanding of the topic itself. Topics include the basics of light, different types of lenses and understanding how they bend light, different types of mirrors and understanding how they bend light, how the human eye works to project images, how the human ear works to take in sound, and much more. You can rely on me as I made these notes for myself and I am in the 1% of top students in the whole of New Zealand.
Description: These notes cover all about Light and Sound (Physics) in-depth. They are perfect if you need cheap, reliable notes to study for an exam or test, or just for good understanding of the topic itself. Topics include the basics of light, different types of lenses and understanding how they bend light, different types of mirrors and understanding how they bend light, how the human eye works to project images, how the human ear works to take in sound, and much more. You can rely on me as I made these notes for myself and I am in the 1% of top students in the whole of New Zealand.
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SCIENCE REVISION
NOTES
LIGHT & SOUND
Science Notes
Light
Light
part of the electromagnetic spectrum
electromagnetic energy travels through space as a transverse
wave
a transverse wave has a disturbance at right angles to the
direction the wave moves (e
...
water waves)
incandescent objects give off light because they are hot (e
...
Sun)
fluorescent light tubes are coated with zinc sulphide that gives
off light when hit by an electron in the tube
bioluminescence is when insects, deep sea fish and bacteria
produce their own light
laser produces a beam of light of one colour
laser light has low divergence; spreads out little over a long
distance
luminous objects do NOT give off their own ligh (e
...
the moon)
we see luminous objects because they reflect/radiate light from
other light sources
light travels in straight lines called rectilinear propagation of
light
a single wave of light is called a ray
beam is formed when many rays join together
in space, light travels at 300,000 km/s
chalk particles SCATTER laser beams
eyes and luxmeters detect light
light slows down when it travels through denser medium (e
...
water)
Science Notes
Reflection
When light hits a surface it can be REFLECTED, REFRACTED or ABSORBED
...
This type of reflection is
useful because less amount of image quality is lost
...
g
...
4
Water: 1
...
0
when a ray shines through the curved/bulging side
the more the angle of incidence, the more the angle of
refraction
Science Notes
Lenses
curved pieces of glass used to bend light
Convex lens: converging lens (image upside down)
Concave mirror: converging mirror (image upside down)
Concave lens: diverging lens (image right side up and smaller)
Convex mirror: diverging mirror (image right side up and smaller)
Convex Lens/Converging Lens
Lens bends outwards
...
Our eyes contain converging lenses so the image can form on the retina
...
If the object is beyond the twice the focal point, the image is smaller
...
If the object is on the focal point, the image never forms as the rays are parallel
...
Concave Lens/Diverging Lend
Lens bends inwards
...
Fresnel Lens
designed to mimic the image projection of large lens which needs a large aperture and a
short focal length
can capture or oblique light from a source
Uses
Correcting far-sightedness: converging lens/convex lens (makes objects appear larger)
Correcting near-sightedness: diverging lens/concave lens (makes objects appear smaller)
Telescope/microscope: converging lens/convex lens (makes appear objects larger)
Science Notes
Prisms and Colour
If a beam of white light is shone onto a prism, it will split into seven colours
...
red
orange
yellow
green
blue
indigo
violet
Red is refracted the least and violet is refracted the most
Title: Light and Sound Notes (Physics)
Description: These notes cover all about Light and Sound (Physics) in-depth. They are perfect if you need cheap, reliable notes to study for an exam or test, or just for good understanding of the topic itself. Topics include the basics of light, different types of lenses and understanding how they bend light, different types of mirrors and understanding how they bend light, how the human eye works to project images, how the human ear works to take in sound, and much more. You can rely on me as I made these notes for myself and I am in the 1% of top students in the whole of New Zealand.
Description: These notes cover all about Light and Sound (Physics) in-depth. They are perfect if you need cheap, reliable notes to study for an exam or test, or just for good understanding of the topic itself. Topics include the basics of light, different types of lenses and understanding how they bend light, different types of mirrors and understanding how they bend light, how the human eye works to project images, how the human ear works to take in sound, and much more. You can rely on me as I made these notes for myself and I am in the 1% of top students in the whole of New Zealand.