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Light Sight And Insight > Exam 1 > Flashcards

Exam 1 Flashcards

0
Q

First postulate of special relativity

A

Laws of physics hold true for all frames of reference

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1
Q

Quantum leap

A

When an electron is agitated it jumps to the next fixed orbit and as it moves back down it emits energy

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2
Q

Entanglement

A

Two particles are linked no matter how far apart and share properties and change based off one another

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3
Q

Gravity and space

A

Gravity is space itself being warped by objects, like fabric
The bigger the object the larger an area warps

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4
Q

Ether

A

An invisible medium filling empty space between objects

Ultimately disregarded

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5
Q

Arrow of time moving forward

A

Entropy theory
Perceive ordered states becoming disorder
Started with the Big Bang and becoming more and more disorganized

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6
Q

Higgs field

A

Space not empty but filled with tiny particles

These particles gain mass as they struggle to move through space

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7
Q

Thomas young experiment

A

Double split experiment
Light acted like a wave when passing through two slits creating bans of light and dark.
Wave crests combined and other areas canceled each other out

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8
Q

Gravity effect on space time

A

Gravity slows passage of space time

The stronger the gravitational pull the slower time will move

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9
Q

Dark energy concept

A

Questioning of whether the universe is still expanding slowly led to the concept that dark energy is a force continuously forcing the universe sort into a disorganized state

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10
Q

Define speed

A

Distance traveled in a given amount of time

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11
Q

Empedocles light

A

5th century by Greece

Light as emerging from our eyes and illuminating objects before unlike fire

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12
Q

Colors by addition

A

Red green and blue light combine in various ways to make visible colors

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13
Q

Wavelength

A

Distance between any two corespondent points on successive waves

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14
Q

Second postulate of special relativity

A

No matter what frame of reference the speed of light is measured as a constant

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15
Q

Photons produced

A

When a. Electron flaws to normal orbital levels it produces energy in the form of a photon that is the same frequency and color of the electron it came from

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16
Q

Einstein and Bohr disagreement

A

Whether nature of reality determined by chance

Uncertainty governed by observation or not. Bohr said yes and was correct

17
Q

Canary island experiment

A

Teleported a copy of a photo to separate island using properties of entangled particles

18
Q

Absorption

A

Light hits an object with similar frequency of electrons and speeds up
Absorbed light is no longer visible and only others bounce back

19
Q

Time dilation

A

Time slows with motion. Slower based on frame of reference

Speed of light constant not time

20
Q

Gyroscope experiment showed what?

A

Space acts like a fabric

Earths Gravity is actually shaping the space around it causing objects in orbit to point toward it

21
Q

Refraction

A

Light passes through one transparent medium to a second transparent medium (like air and water) change in medium changes speed of light and cause it to bend

22
Q

How might we Travel to past

A

Using war hole that connects two parts of space time

23
Q

Electromagnetic spectrum

A

Range of light frequencies and energies

For visible light Red has least energy and violet has highest

24
Q

Frame of reference

A

Where you are as a person or observer. You have a particular position. All motion you see is relevant to your frame of reference

25
Q

Colors by subtraction

A

Absorption properties, some frequencies of light are absorbed by object hitting and are no longer visible, light of rest of colors is what is reflected back

26
Q

Newtons concept of light

A

Light in the form of particles because it travels in straight lines and bounces off objects much like a ball

27
Q

Interference

A

Interaction of waves that are similar to each other in frequency

28
Q

Diffraction

A

Light passes around the edge of an object and slightly bends

29
Q

Space time

A

Space And time are connected and directly effect each other. Motion through space effects the passage of time
Motion slows the passage of time

30
Q

Alhazen light

A

Year 965
Believed light was independent from the eyes
Instead suggested light is reflected from source, off of objects and seen by eyes

31
Q

Euleces light

A

300 bce

Light comes from our eyes but is projected in straight lines

32
Q

Frequencies of light

A

Number of waves that pass through a point in space during any given time interval
Frequencies of visible light determines color

33
Q

Scattering

A

Light strikes a rough surface instead of smooth and bounces back at many different angles and directions

34
Q

Holograms and blackholes

A

When objects fall into black hole a copy of its information is made outside the hole which could be interpreted as a hologram like replica of the original object

35
Q

Reflection

A

Light bounces off smooth surface and bounces back at equal angel

36
Q

Double split experiment

A

Sowed electrons act like both particle and waves.
Slipping and combining peaks and valleys as travel through slits making a barcode like pattern.
When directly observer however, acts like particle

37
Q

Possible travel to the future

A

Using black hole, where gravitational pull is stronger and the. Return to earth with weaker gravitational pull, time will have moved faster on earth compared to your time at black hole

38
Q

Length contraction

A

Length measures shrinks with motion, would seem smaller if it were still

39
Q

Light and space time

A

Combined speed of any objects motion through time and space always equals the speed of light
Speed of light as constant

40
Q

Fundamental properties of the universe

A

Space, time, matter, motion, mass, Gravity, energy, light

Light Sight And Insight (3 decks)

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