Errors, Uncertainties and Measurements Laboratory Report
Experiment 1: Errors, Uncertainties and Measurements
Laboratory Report
Abstract
The success of an experiment greatly depends on how the group is able to execute it and how precise and accurate their results are. In this matter, errors and uncertainties in measurements are of great factor. In this experiment, the group was able to classify the causes of such errors and which measuring device is more precise and accurate than the other. These were obtained by measuring the diameter of an iron sphere with several trials made by each member of the group using measuring devices such as the Foot Rule, the Vernier Caliper and the Micrometer Caliper. The group found out that in measuring, both the Vernier Caliper and the Micrometer Caliper are preferable to use for these can give more accurate measurements compared to what a Foot Rule can. The deviation, volume, mass and density of the iron sphere were also identified.
1. Introduction
Measurements may be ranked among the necessaries of life to every individual in the human society. The knowledge of them, as in established use, is among the first elements of education, and is often learned by those who learn nothing else, not even to read and write. Measurements were among the earliest tools invented by man. Primitive societies needed rudimentary measures for many tasks: constructing dwellings of an appropriate size and shape, fashioning clothing and bartering food or raw materials. Man understandably first turned to parts of his body and his natural surroundings for measuring instruments.
As societies evolved, these practices seem to be unsuitable. Measurements became more complex. The invention of advanced measuring devices, numbering systems and the science of mathematics made it possible to create whole systems of measurement units suited to trade and commerce, land division, taxation, and scientific research. Some of these inventions are those that were used in the experiment conducted – Foot Rule, Vernier
Laboratory Report
Abstract
The success of an experiment greatly depends on how the group is able to execute it and how precise and accurate their results are. In this matter, errors and uncertainties in measurements are of great factor. In this experiment, the group was able to classify the causes of such errors and which measuring device is more precise and accurate than the other. These were obtained by measuring the diameter of an iron sphere with several trials made by each member of the group using measuring devices such as the Foot Rule, the Vernier Caliper and the Micrometer Caliper. The group found out that in measuring, both the Vernier Caliper and the Micrometer Caliper are preferable to use for these can give more accurate measurements compared to what a Foot Rule can. The deviation, volume, mass and density of the iron sphere were also identified.
1. Introduction
Measurements may be ranked among the necessaries of life to every individual in the human society. The knowledge of them, as in established use, is among the first elements of education, and is often learned by those who learn nothing else, not even to read and write. Measurements were among the earliest tools invented by man. Primitive societies needed rudimentary measures for many tasks: constructing dwellings of an appropriate size and shape, fashioning clothing and bartering food or raw materials. Man understandably first turned to parts of his body and his natural surroundings for measuring instruments.
As societies evolved, these practices seem to be unsuitable. Measurements became more complex. The invention of advanced measuring devices, numbering systems and the science of mathematics made it possible to create whole systems of measurement units suited to trade and commerce, land division, taxation, and scientific research. Some of these inventions are those that were used in the experiment conducted – Foot Rule, Vernier
References: [1] http://upload.wikimedia.org/wikipedia/commons/9/96/Vernier_caliper_new.png [2] http://www.thesurfacegrinder.com/wp-content/uploads/2011/03/Micrometer-caliper-parts.jpg [3] http://www.e-scales.co.uk/images/KB650-2NM.png http://www.correspondence.school.nz/departments/science/physics/web/home/physics/docs_phys/revision_topics/uncertainties.pdf http://www.historyworld.net/wrldhis/PlainTextHistories.asp?ParagraphID=cah http://www.google.com.ph/#hl=en&source=hp&q=history+of+measurement&oq=history+of+meas&aq=0&aqi=g10&aql=&gs_sm=e&gs_upl=70755l74277l0l15l15l0l4l4l0l236l1764l1.7.3l11&fp=708f9752c1747d2e&biw=1024&bih=499