Physics study notes summative flashcards (Abdu)

physics baby!

In order, put all of the parts of electromagnetic spectrum with least energetic

radio, micro, infrared, visible, UV, x-ray, and gamma rays

What is bioluminescence?

A source of light found in living things, ex: firefly, jellyfish

What happens when you mix together cyan, yellow, and magenta?

it forms black

List all of the seven colors in the visible spectrum of white light

red, orange, yellow, green, blue, indigo, violet. (ROY G BIV)

What are the two laws of reflection?

The Angle of incidence is equal to angle of reflection. The normal, incident ray, and reflected ray all lies on the same plane.

What’s a light source that only reflects light?

A non-luminous source

What’s the angle between the incident ray and normal?

Angle of incidence

What’s this type of reflection off an irregular surface?

A diffuse

What’s the source that produces its own light?

Luminous

What does the word refract means?

the bending of light rays as they pass from one medium to another

What’s this light source that emits from a material being heated?

Incandescence, ex: a light bulb

What’s this mirror that always produces a virtual image that’s smaller?

A convex mirror

What’s this angle between the reflected ray and normal?

Angle of reflection

What’s a focal length?

The distance from the mirror to the focal point

What is a normal?

Line that is perpendicular to a flat surface like a plane mirror

What’s this smooth flat reflecting surface?

A specular

What’s chemiluminescence?

A light source from a chemical reaction, ex: glow sticks

While drawing out images, to put the image location or final arrow, which line does it have to begin with to draw it out?

The principal axis, line up the ruler where the two lines meet and draw the arrow there until you reach the image point

What are the imaging rules for concave and convex mirrors?

They’re parallel through F, then through F then parallel

This light is caused by passing an electric current through gas?

Electric discharge, ex: street/store signs, lightning bolts

What is fluorescence?

A light produced when an object absorbs ultraviolet light and immediately releases the energy as visible light, ex: classroom lights, passports, legal documents

What’s phosphorescence?

An emission of light from a material during and after exposure to an energy source like ultraviolet light, ex: glow in the dark toys

Light that produces from friction like scratching, crushing, or rubbing certain crystals.

triboluminescence, ex: wintergreen candy is crushed

What is an LED light?

A electronic device that allows an electric current to flow in only one direction, ex: holiday lights for Christmas

This type of light is very special, intense, concentrated in one narrow beam, and can travel long distances.

laser, it also consists of an electromagnetic

What’s the difference between specular and a diffuse reflection?

Specular is when smooth surfaces reflects light showing a clear image. While diffuse is like the opposite because it forms an unclear image while rough surfaces reflect light

How does converging and concave mirrors relate to each other?

They both have similar images

This light ray travels towards the mirror?

It’s the incident ray

How does diverging and convex mirrors relate to each other?

They both are nearly the same as well

What’s the imaging rules for the diverging lenses?

The parallel refracts as if its from F, then towards F refracts parallel

What are the imaging rules for the converging lenses?

Its parallel through F, then through F then parallel

What’s this material that scatters light?

Translucent

What are the characteristics of a convex mirror?

It smaller, upright, behind the mirror, and a virtual image

What happens when light is traveling from a slower medium to a faster medium?

It bends away from the normal. If it’s opposite, its towards the normal

Where must you be to appear upright in a concave mirror?

between F and the mirror

Where must you be to appear inverted in a concave mirror?

beyond F

What is the complementary color to the primary light color green?

magenta, it then makes white light

What are some ways to identify if an image is real?

It’s inverted and the object or arrow is beyond F

What is the Iris on the human eye?

the colored part of the eye

What is the pupil of the human eye?

The hole in the Iris

What is the retina?

A membrane at the back of the eye that has special light-sensitive receptor cells

What’s the difference between Myopia and Hyperopia?

Myopia: you can see nearby objects clearly but not faraway objects

Hyperopia: you can see faraway objects clearly but not nearby objects

What are the two lenses that can correct both myopia and hyperopia?

myopia: Diverging lens by spreading out incoming rays before they enter the eye

Hyperopia: Converging lens by bringing incoming rays closer together before they enter the eye

This helps to focus the light which is on the top of the pupil.

The cornea