Please enable JavaScript.
Coggle requires JavaScript to display documents.
universe (human understanding of the universe (science timeline (Einstein …
universe
human understanding of the universe
the universe cannot be younger than the oldest star
there had to be a previous stun to create the elements we have here
the sun is around 4.5 billion years old and will live for another 5 billion years
it will take over 12 billion years to form what elements we have today
#
Hubble showed that the universe is expanding that is called red shift
if we rewind the universe we will see everything run to their orgins
science timeline
hubble
he used stars to measure the Andromeda nebula
he discovers that the universe is expanding
used the 100 inch telescope
takes a picture of a galaxy whirlpool
#
he proved that galaxies exist
he uses larger circles too
1929
objects move around a stationary earth
universe revolves around the earth
Johannes kepler
#
1610
analyzes accurate observations of Tycho Brahe
discovers that planets move around the sun in elliptical orbits
Einstein
#
can be used to describe large scale motion throughout the universe.
#
published the general theory of relativity.
proposes that mass and energy cause space to curve.
1915
the universe
univers study is called cosmology
the part of the universe that we can see is called the observable universe
the universe also includes all of space and time
cosmetologist study the changes in the universe
the universe contains all of the star systems
#
gallelaos expiriments established principles
greeks reconized things about the universe
4th centry
Aristotle
proposes that the sun,moon,planets, and stars revolve around the earth
his system uses small circles
builds ideas on earlier astronemers
the 2nd century
henrietta leavitt
discoveries
stars pulstate in a regular pattern
discovered lots of earth
learned about stars
1912
larger cephied is slower
dicovered a type of star
big bang
the big bang describes how the universe developed
#
e=energy m=mass c=speed of light
to understand the big bang we need to understand e=mc2 first
it will take 12 billion years to form the elements we have today
the equation simply states that mass can become energy and energy can become mass
radiation
when it passes through the body it warmes it up
heater
fire
cars
sun
whether it is ionizing or non ionizing it will influence health risks
comes from a source and travels through space
radiation
when it passes through the body it warmes it up
heater
fire
cars
sun
whether it is ionizing or non ionizing it will influence health risks
comes from a source and travels through space
radiation revels the secrets of the universe
gamma
can destroy your DNA
most dangerous radiation
#
long wavelength
visible
can be seen by human eye
doesnt like green light
used for photosynthisis
infared
we detect it as heat
#
invisable to the human eye
#
night vision
#
many uses
remote control
thermal imaging
doppler effect
closer it gets to waves it shortens
farther it gets to waves it gets larger
called blueshift
does the same thing as sound waves
ultra violet
higher risk of skin cancer
some animals can see uv radiation
bees
fish
mostly comes from the sun
production of vitamin d
microwaves
cell phone,gps,wifi,bluetooth
low frequency
long waves
#
many uses
x ray
#
also really dangerous
can pass though tissue
like teeth
radio
communication
used for lots of things
generated by lighting stuff in sapce
longest waves
sattilite
