This document discusses different tools used to measure physical quantities like length, mass, time, and speed. It describes several types of measuring instruments and their level of accuracy, including rulers, calipers, micrometers for length; balances for mass; stopwatches and atomic clocks for time; and speedometers for speed. For each tool, it provides examples, diagrams, and explanations of how they work and are used to obtain measurements.

1. Tugas fisika
-Fitri anggriani
-Adelia Dwi Safitri

2. A.The definition of measurement
Measuring is comparing the quantity measured
with a similar quantity stipulated as a unit.The
instrument used as the standard of comparison
and instrument used to measure is called the
measuring instrument

3. B.Measuring Instrument
1.gauge length
Length measuring instrument consists of several meter types
such as folding (ribbon), ruler, calipers and micrometers and
each has a different level of accuracy.
a. Rules
- To measure the length of objects less than 50 cm or 100 cm.
- The level of precision of 0.5 mm ('/ s x 1 cm)
- The unit is listed in the bar cm, mm, and basil inchi.Untuk get
exact measurements, then the angle of upright lotus
pengamatanharus with objects and ruler.
Examples of measurements with a ruler:
Meter Band
Used to megukur bisadilakukan not an object with a
ruler, such as its size is too long or straight shape. Having a
level of accuracy up to 1 mm.

4. B.Micrometer Screw
- Use to determine the length of a very small
- Has the level of accuracy up to 0.01 mm
C.Long Slide
In practice, measuring the length sometimes require
measurement tool that is able to read the results of
measuring accuracy of 0.1 mm (0.01 cm). For this kind
of measurement we can use calipers.
calipers measuring tools
Calipers are devices used to measure the diameter, the
outer dimensions of an object, and dimension in an
object. Calipers have two parts, the fixed jaw function
as a fixed scale that can not be moved to its
location, and sliding jaw which function as a Nonius scale
and its location can be shifted back and forth to adjust
and measure objects. Calipers can be measured with
accuracy up to 0.1 mm.

5. 2. Mass Measurement
There is only one type of measure of mass, the balance
sheet. Even so, the actual balance of species variety.
Here's the explanation.
Balance, or better known as the scale is a tool used to
measure the mass of an object. There are several types of
balance sheets, is
A.Markets Balance
Markets Balance, the balance of
which is used in traditional markets,
looks like the picture on the side.
How to use this balance by putting
the object to be weighed on the
part shaped like a basin, then the
pendulum is placed next to a flat
sheet that is almost balanced by the
weight of the object, then the
balance arm moves and the
measurement results can be known

6. B.Two Arm Balance
Two Arm Balance, the balance of which is
usually found in the lab, looks like the picture
on the side. How to use this balance is similar
to how the use of market balance, the
difference pendulum balance sheet contained
in the balance of the market can be replaced
with other items.
C.Balance of the three arms
Three Arm Balance, the balance of which are
also commonly found in laboratories, looks like
the picture on the side. How to use this
balance is by way of a third shift a pointer to
the far left (scaled to zero), then place the
object to be measured on the left that there
is a place for the object to be measured, and
the third slide the pointer to the right until
the balance, and the result measurements can
be known.

7. 4. Measuring Time
Measuring tools such as a stopwatch and an atomic
clock. Here's the explanation.
A.Stopwatch
Stopwatch is a measure of the time that is
normally used to measure the fast time, for
example, measure the time while racing driver.
There are 2 types of stopwatches, the
stopwatch analog and digital stopwatch. Analog
stopwatch has an accuracy down to 0.1
seconds, while the digital stopwatch has an
accuracy up to 0.01 seconds, some even up to
0.001 second. For example, there are drivers
who at a distance of 1000 m time when
measured using a stopwatch results 9.9
seconds, but when measured with a digital
stopwatch result is 9.99 seconds, maybe even
9.999 second. Analog stopwatch shape can be
seen in the left image, while the image digital
stopwatch can be seen in the right image.

8. B. Atomic Clock
An atomic clock is a time measuring tool that uses an
atomic resonance frequency standard as its counter. The
workings of this atomic clock that is by filling cesium-
133 atom into an atomic clock, then you will see the
vibrations of the cesium-133 atom per second. And
please note, the second is the time interval required by
the cesium-133 atom to perform 9,192,631,770 cycles.
And to this day atomic clocks measure time regarded as
the most thorough. And estimated atomic clock will make
mistakes just 1 second in 1 million years.

9. 5. Speed Measurement
Speed measuring devices such as speedometer. Here's the
explanation
A. Speedometer
Speedometer is a ground vehicle speed gauges, which are standard
operating any vehicle on the road. Shaped like the picture on the
side. Speedometer function for the driver to know the speed of the
vehicle being operated and used the information for controlling the
speed of the region / street that is not too slow or too fast, can
regulate and control the speed of travel time on the path of the
speed restricted. There are several types of sensors measuring
speed, the following explanation.
Mechanically,the speed measuring device is connected directly to the
front wheels or transmission by using a cable that rotates when the
vehicle is moving, rotating motion is then converted to drive jaruk
speed and Electronics,is a measure of the speed of the work on a
sensor that is placed in a vehicle drive shaft axis medeteksi amount
for the next round of data sent to the speedometer to the principle
of Eddy currents that move the needle indicates the speed or the
speed digitally.GPS,accelerometers are devices that use changes in
the earth coordinate position data obtained from GPS satellites are
processed by a processor speed information.

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