This contribution is a suggestion for NCalc+ (Open Source).

Application Source:

https://play.google.com/store/apps/details?id=com.duy.calculator.free&hl=es

What is NCalc+ (Open Source)?

An open source android application specifically, a calculator which provides the following features:

ALGEBRA

1. Computer science
2. Solving the equation:
3. Solve system equations
4. Graphing
5. Cartesian geometry sand (Viet Nam Education)
6. Unit Conversions
7. Simplify expressions
8. Polynomial factorization.
9. Binomial expansion Newton
10. Matrix: evalute matrix step by step

ANALYTICS

1. Derivative
2. Antiderivative
3. Definite integrals
4. Find the limit of the sequence, function

TRIGONOMETRIC

1. Trigonometric expand: sin(2x) -> 2sin(x)cos(x)
2. Trigonometric reduce: 2sin(x)cos(x) -> sin(2x)
3. Trigonometric to exponent: sinh(x) -> (e^x-e^(-x))/2

DETERMINATION OF STATISTICS

1. Combination
2. Permutation

SOME OTHER FEATURES

1. Prime factors
2. Modulo
3. Catalan number
4. Fibonacci number

The Calculator does not show the steps to solve the equations, system of equations, derivative... but only for the final result.

Source code : https://github.com/tranleduy2000/ncalc

Problem

As the author of this contribution post was trying to solve some Mathematical Word Problems dealing with unit conversion of weight, he was able to encounter unusual but useful units of weight such as " grains " , " stone " and " ton (metric) ". As the author was trying to solve such Mathematical Word Problems, he was having a difficulty in converting " kilograms to the above mentioned units of weight ". So he was trying to consult the Ncalc+ Application on Android, however, he found out that the above mentioned units of weight was not there. He wasn’t able to find such units of weight and thus, had noticed that the units are unfortunately lacking. Aside from that, the author’s only choice was to find another way to solve the given Mathematical Word Problems without the aid of the said application since the said application was not helpful at all. So now, this suggestion had come up on his mind.

Suggestion

To solve the given problem, the author of this contribution was able to find a solution. Thus, from the title of this contribution states, “ Add The Units - Grain, Stone and Ton (Metric) to the Units of Conversion of Weight ”. The scope and limitation of this suggestion will only be for the additional units of weight namely Grain, Stone and Ton (Metric) nothing more, nothing less. Furthermore, this contribution will also tackle and explain what are the above mentioned units of weight, how and when they are used and what they are for. Lastly, for this contribution, the current format of the said android application as well as the suggested format ( for NCalc+ ) will be provided to make the suggestion clear and comprehensible. So now, this suggestion has been made.

Grain Scale

Grain, unit of weight equal to 0.065 gram, or 1/7,000 pound avoirdupois. One of the earliest units of common measure and the smallest, it is a uniform unit in the avoirdupois, apothecaries’, and troysystems. The ancient grain, varying from one culture to the next, was defined as the weight of a designated number of dry wheat (or other edible grain) kernels taken from the middle of the ear. It was also used as the original basis for the medieval English inch, which was defined for instructional purposes as the length of 3 medium-sized barleycorns placed end to end (about 2.54 cm). The Sumerian shekel equaled the weight of 180 wheat grains; the British silver penny sterling was set at the weight of 32 wheat grains. The metric grain of 50 mg is used to weigh precious stones.

Stone Scale

The stone or stone weight is an English and imperial unit of mass now equal to 14 pounds (6.35029318 kg). England and other Germanic-speaking countries of northern Europe formerly used various standardised "stones" for trade, with their values ranging from about 5 to 40 local pounds (roughly 3 to 15 kg) depending on the location and objects weighed. The United Kingdom's imperial system adopted the wool stone of 14 pounds in 1835. With the advent of metrication, Europe's various "stones" were superseded by or adapted to the kilogram from the mid-19th century on. The stone continues in customary use in Britain and Ireland used for measuring body weight, but was prohibited for commercial use in the UK by the Weights and Measures Act of 1985.

Ton (Metric)

The tonne (non-preferred SI derived unit; SI symbol: t), commonly referred to as the metric ton in the United States, is a non-SI metric unit of mass equal to 1,000 kilograms; or one megagram (Mg); it is equivalent to approximately 2,204.6 pounds, 1.102 short tons (US) or 0.984 long tons (imperial). Although not part of the SI per se, the tonne is "accepted for use with" SI units and prefixes by the International Committee for Weights and Measures, along with several other units like the bar, litre and day.

Suggested Format

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Go Settings and select “ Unit Converter ” Under Algebra

Select “ Weight ” Conversions from “ Unit Converter ”

Scroll Down and Find “ Grain/Stone/Ton (Metric) ” on the Unit Conversions.

Input any value on Kilogram and find it’s equivalent on “ Grain/Stone/Ton (Metric) ”

Benefits

1. It will improve, restructure and make the unit conversions of weight on NCalc+ more beneficial, efficient and trusted since it will be much useful in cases like the above mentioned problem.
2. Additional unit of weight to convert in NCalc+ which would be helpful to anyone who are dealing with Conversions of Weight Units. This would also be somehow help them to gain additional knowledge on the units of weight and to expand their expertise.
3. NCalc+ Unit Converter will be updated and it will be more advantageous to both the developer and application users.
4. Another useful and latest list of units of weight for converting will be added to Unit Converter.
5. Makes it easier and faster to convert units of weight using NCalc+ Application.

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That would be all ! Thank you for visiting and reading the context ^_^

Author: @rejzons

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Posted on Utopian.io - Rewarding Open Source Contributors

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