MEASUREMENTS OF LENGTH, AREAS, SPEED AND TIME Flashcards
(33 cards)
is an integral part of Physics like any other scientific subject. an integral part of human race, without it there will be no trade, no statistics
Measurement
are used to measure. One would know a simple ruler or tape could be
used to measure small distances, your height, and possibly much more. In Physics, we
do have certain scales for certain quantities which we will see very shortly.
Scales
Length, Mass and Time. The current system of units has three standard units:
The meter, kilogram, and second.
the metric
system
is a gauge that measures and displays the
instantaneous. Thus, an increase in the speed of the car will twist the cup
and pointer against the spring.
Speedometer
measure the speed of a car by being linked mechanically
with the gearbox output shaft . Since this shaft lies ‘downstream’ of the gear box, the
speed with which it rotates is independent of gear changes and so gives a true measure
of the road speed.
Mechanical speedometers
are the most often used length measurement tool that we find in offices, schools,
and home. It can measure objects up to 30 centimeters with sufficient precision 1
millimeter. In schools, children draw squares, rectangles, triangles, etc. by using this
stuff. There are two kinds of rulers based on the material that made it: plastic rulers and
metal rulers
Rulers
Its length is generally 1 meter
Yardstick or Meter Stick
is a portable compact flexible ruler that can be rolled up and pull out.
This is an important tool to measure a length of more than 1 meter and up to 25 feet. In
some cases, a tape measure for surveyors is able to quantify distance up to 100 feet
Tape Measure
types of tape measure
sewing tape measure, retractable tape
measure, and surveying tape measure
is a linear measurement tool that is by means of not touching the object
physically; not like a tape measure that we need to stick out the blade onto the surface
of something we are going to measure. Having that said, our work is highly simplified,
becomes easier and faster
Laser Measure
A made-of-steel block that can be used for calibrating a linear (length, width, and
depth/height) measuring instrument. If you are going to calibrate rulers, tape measures,
calipers, and micrometers,
Block Gauge
In case you are going to observe a small object’s diameter with high accuracy and
precision, you need this tool. can measure with precision until 0.01 millimeters.
You can perform outside and inside and even depth measurement with this measuring
instrument.
Caliper
is intended for more accuracy and precision
measurement. If you are not satisfied yet with the accuracy of the caliper, then turn to
this one. You need to remember that it can only support one type of measurement.
There cannot be done three types of measurements in one tool with this like the caliper.
. Micrometer
You are a surveyor that wants to measure the distance of two separated points on open
land, we utilize its wheel diameter
for the measurement.
Wheel Measure
The same concept is also implemented tofunctions to measure distance using a wheel. is always found in vehicles. It’s designed to measure how far the vehicle has passed through.
Odometer
is the friend of hunters, navigator, and also for a military purpose. If you
are going to measure a long distance from your position to a specific point you are
targeting, then you need this one. One incredible benefit of it is the ability
ranging from a far-away target without contacting it.
Rangefinder
It’s designed to measure the gap thickness accurately. All you have to do is
inserting one of the blades to the gap you are going to measure. Try one by one until
you think it’s the right thickness. In the case of measuring gaps, you must use the best
feeler gauge. If the blade thickness is inaccurate or the material is easy to rust, the
measurement can be misleading.
Feeler Gauge
is
commonly applied to car paint. By means of this tool, the condition of the car can be
evaluated.
Paint Thickness Gauge
is actually a depth gauge. But it has some modifications to match the need for
measuring the depth of tire tread. Therefore, the maximum range of tire tread depth
gauge is no more than 1 inch. It’s a simple, small, yet important tool to have in your
vehicle storage.
Tire Tread Depth Gauge
measure the engine speed in revolutions per minute (rpm). This
instrument determines the rotational speed (how fast it’s spinning) of a shaft or disk in
the engine and displays the reading on a calibrated analog dial display on the
dashboard of a car, aircraft or other vehicle.
Tachometers
measure the traveling speed of land vehicles. They are used to help
drivers determine their driving speed and maintain it at save and realistic levels. These
meters use magnets and a set of rotating cables connected to the transmission to
determine the rate of travel, which is shown on an analog display on the vehicle’s
dashboard.
Speedometers
measure the rates of acceleration and deceleration of a vehicle to
determine whether the drive train and braking systems are functioning correctly. This
instrument has been used to show a vehicle’s engine power by demonstrating how fast
that car or truck can get from 0 to 60 mph. T
Accelerometers
uses the Doppler effect, which bounces
sound waves off moving vehicles, then calculates the sound wave frequency as the
return to the instrument. Soundwave frequency increases the closer the vehicle is to the
instrument, and decreases as the distance between the vehicle and radar gun get
wider.
RADAR
aims an infrared light beam toward a vehicle and measures how long it takes for the
light waves to reflect back. The light pulses have the advantage of traveling at the
speed of light instead of the speed of sound, which provide a reading a bit more quickly
than RADAR.
LIDAR
