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Sunday 29 November 2015

Lime Part 1


History of Lime
Limes originated from Southeast Asia. It is thought that the Persian and Arab traders introduced limes to India and the Middle East, from there the fruit was brought to France and Italy. Limes were first grown on a large scale in the Southern Iraq and Persia. Lime trees were obtained from Rio de Janeiro, Brazil, by the first fleet on their way to Australia. Today, the world's largest producer of lime is Mexico, which is also the largest consumer. Limes are also cultivated in the West Indies and other regions. On Christopher Columbus second voyage in 1493, he brought lime seeds to the West Indies in the particular Island of Hispaniola. 

 

What is Lime?
Lime is a citrus fruit and the peel is greenish yellow in color. The pulp is tender, juicy and yellowish green. Lime is grown in tropical climates and are rich in Vitamin C. The lime fruit tends to be smaller and rounder than lemon. Limes can be either sour or sweet. Sour limes have a greater sugar and citric acid content while sweet limes lack citric acid content and are sweet in flavour. 

Nutritional Value of Lime
Lime is an excellent source of Vitamin C and dietary fibres. It contains less protein and fat. Lime consists of Vitamin B1, Vitamin B2, Vitamin B3, Vitamin B5, etc. Lime also contains minerals such as calcium, iron, magnesium, phosphorus, sodium, etc.

Saturday 28 November 2015

Population

What is population?
Population refers to the total number of persons living in a specific region or country. The composition of a population gives an indication of how the population is made up. It includes size, age, gender, and education level of the population. 


Terms relating to population
  • Crude Birth Rate- The number of live birth per 1000 persons in a population within a given period of time, usually one year.
  • Crude Death Rate- The number of death per 1000 persons occurring within a period of a year in a particular population. 
  •  Natural Increase- The increase in population brought about when birth rate exceeds the death rate. 
  • Infant Mortality Rate- The annual number of deaths per 1000 infants (under the age of one) in the population.
  • Life Expectancy- The average number of years that persons in a given population are expected to live.

Sunday 22 November 2015

Scientific Instruments Part 3

Micrometer- An instrument used for measuring minute distances. 


Manometer- An instrument used for measuring gases. 


Ammeter- An instrument used for measuring electric current.

 

Binoculars- An instrument which enables a person to see distant objects as if they were near.  

 

Abacus- A calculator with sliding counters used especially by the Chinese people. This instruments enables them to count.