MOTION MEASUREMENT
AND CONTINUITY
VELOCITY
Form a
Euclidean vector space
According to
Mathematicians
Called GALILEAN
Velocity
Does not need
Space
time
Measurement
to be defined
Can
Be distinguished
Change gradually
Point somewhere
Be compared
Be added
Have defined angles
HOLLOW EARTH
Distances is
r = R2 /r.
STRAIGHT
Flatness
Is defined with
the help of
Bodies
Radiation
TIME
is deduced by
comparing motion
Sequences of
all instants
The smallest part
is called
Events
Instants of
time
can have vanishing duration
are equal for all observers
Can be distinguished
can be put in order
define duration
do not end
don´t habour surprises
Clocks
moving system whose
position can be read
types
Stopwatches
Sundials
Lunar clocks
Seasonal
clocks
SPACE
Distinguish positions
with our senses
Properties
Galilean space
Can be
distinguished
Can be lined up
if on one line
Can form
shapes
Define
distances
Define
angles
Can beat
any limit
vanishing
distances
Coordinates (x,y,z)
they specify the
location
SIZE
Length
Straight lines
Is used to defined
Volume
Values be
Additive and rigid
rectangular polyhedron a, b, c as V = abc.
a general polyhedron cannot
be cut into a cube by straight cuts
discovered by
Max Dehn
Area
Values be
Additive and rigid
Itegration
method
where can define area for nicely curved shapes
as the limit of the sum of infinitely many polygons.
a and b as A = ab