This document discusses different systems of measurement throughout history. It begins by having the reader measure parts of their own body. It then provides examples of early human measurements based on body parts from different cultures. Standardized systems of measurement arose due to trade and taxation. The document outlines the English and metric systems commonly used in the US and provides historical context and examples for each. It concludes with discussion questions about why and how we measure.
CONVERSION OF UNITS OF MEASUREMENTS.pptxLiezlBontilao
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CONVERSION OF UNITS OF MEASUREMENTS
Conversion of unit of Measurements for Length
1) Identify the unit you are starting with.
2) Identify the unit you want to end with.
3) Find the conversion factor/s that will convert the starting unit to ending unit. Using the fractional form the unit you want to end will be the numerator the unit to be cancelled will be the denominator.
4) Set up the Mathematical expression so that all units except the unit you want to end with, will not be cancelled.
Convert 36 inches to feet.
Solution:
Step 1: inches
Step 2 : feet
Step 3 : (1 đđđđĄ)/(12 đđđâđđ )
Step 4: 36 inches x (1 đđđđĄ)/(12 đđđâđđ ) = 3 feet
Step 5: Therefore, 36 in = 3 feet
Metrology is the scientific study of weights and measures. Environmental metrology is the science of using instruments to measure the world around us all. After listening to the presentation, you may continue to click on the remaining slides.
CONVERSION OF UNITS OF MEASUREMENTS.pptxLiezlBontilao
Â
CONVERSION OF UNITS OF MEASUREMENTS
Conversion of unit of Measurements for Length
1) Identify the unit you are starting with.
2) Identify the unit you want to end with.
3) Find the conversion factor/s that will convert the starting unit to ending unit. Using the fractional form the unit you want to end will be the numerator the unit to be cancelled will be the denominator.
4) Set up the Mathematical expression so that all units except the unit you want to end with, will not be cancelled.
Convert 36 inches to feet.
Solution:
Step 1: inches
Step 2 : feet
Step 3 : (1 đđđđĄ)/(12 đđđâđđ )
Step 4: 36 inches x (1 đđđđĄ)/(12 đđđâđđ ) = 3 feet
Step 5: Therefore, 36 in = 3 feet
Metrology is the scientific study of weights and measures. Environmental metrology is the science of using instruments to measure the world around us all. After listening to the presentation, you may continue to click on the remaining slides.
Circling one star among hundreds of billions, in one galaxy among a hundred billion more, in a Universe that is vast and expanding ever faster â perhaps toward infinity. Itâs easy to forget that we live in a place of astonishing grandeur and mystery.
Register to explore the whole course here: https://school.bighistoryproject.com/bhplive?WT.mc_id=Slideshare12202017
Three Primary Standards ofMeasurement in the Ancient WorldRoland Boucher
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Three primary standards of length, volume and weight were developed in the ancient world probably
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day. Examples of each can be found throughout the Ancient world from England in the west to Japan
in the East. There is also some evidence that some versions may be found in the western
hemisphere.
(High School level presentation)
Hope you find this useful.
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Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
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What is the purpose of the Sabbath Law in the Torah. It is interesting to compare how the context of the law shifts from Exodus to Deuteronomy. Who gets to rest, and why?
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Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdf
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History of Measurement.ppt
1. Warm-Up Activity: Measuring Ourselves
Using your own body, determine:
â˘How many hands tall are you?
â˘How many finger-widths tall is your head?
â˘How many finger-widths is it from your
elbow to the tip of your finger?
Compare your results with your neighbors.
2. A Concise and Abbreviated History of
Measurement
Units of measurement based on the human body
Diagram of Yupâik (Alaska
Native) units of length
Relief carving of Ancient
Greek measurement using
hand span and foot
Diagram of Egyptian
definitions of cubit and
palm
image credit: Jerry Lipka et al
photo credit: Xavier de JaurĂŠguiberry
3. The Smoot
The Harvard Bridge between Boston and
Cambridge, MA. The Harvard Bridge is 364.4
Smoots in length, plus or minus an ear.
Oliver Smoot being used to measure the
Harvard Bridge in 1958.
photo credit: Denimadept creative commons photo credit: MIT museum via Dave Schumaker
4. With trade and taxation came the need for
standardized units
Standard weights for measuring gold
dust used by the Asante of Ghana
photo credit: Claudia Zaslavsky
Standardized weights from the Indus river valley
photo credit: John Hill creative commons
photo credit: Andrew Robinson
A bronze ruler from the Han dynasty in China
5. Systems of measurement commonly used in the US:
The English or Imperial System
image credit: Ian Whitelaw
photo credit: Andrew Robinson
The early English inch was defined as
the length of three barleycorns laid end-
to-end King George the III of Englandâs
standard weights from 1773.
6. Systems of measurement commonly used in the US:
The Metric System
Since 1983, the meter has been defined as
the distance that light travels in 1
299,792458th of a second
Commemorative stamp showing the
French Republic measuring one quarter of
the earthâs circumference â the original
idea behind the meter
7. Systems of measurement commonly used in the US:
More about the metric system
The Canadian Standard Kilogram. The
kilogram is the only unit in the metric
system defined by an actual object.
photo credit: Harry Turner, National Reseach Council of Canada
The nickel has a mass of 5 grams
A cube of water with sides each 1 cm has
a mass of 1 gram
1 cm
1 cm
1 cm
8. Bibliography
Lipka, Jerry, Tod Shockey and Barbara Adams. âBridging Yupâik Ways of
Measuring to Western Mathematicsâ in Learning and Teaching
Measurement: 2003 Yearbook. Ed. Douglas Clements and George
Bright. The National Council of Teachers of Mathematics, Inc,
Reston, VA. 2003
Robinson, Andrew. The Story of Measurement. Thames and Hudson Ltd,
London, UK. 2007
Tavernor, Robert. Smootâs Ear: The Measure of Humanity. Yale University
Press, New Haven, CT. 2007
Whitelaw, Ian. A Measure of All Things: the story of man and measurement.
Quid publishing, Hove, England. 2007
Zaslavsky, Claudia. Africa Counts: Number and Pattern in African Culture.
Prindle, Weber, and Schmidt Inc, Boston, MA. 1973
9. Your turn: Discussion
In groups of 2 or 3, discuss the following
questions:
â˘Why do we measure?
â˘How do we choose what to use to measure?
Think not only in general, but also in the context
of your work in your program.
