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What inspired Louis Braille to invent the Braille code? At what age, did he devise the code?
Louis Braille got his inspiration to use embossed dots to represent letters after he watched Charles Barbier, a retired artillery officer in Napoleon's army, demonstrate a note-taking system he invented of embossed dots to represent sounds (most of the soldiers were illiterate) that would allow noteRead more
Louis Braille got his inspiration to use embossed dots to represent letters after he watched Charles Barbier, a retired artillery officer in Napoleon’s army, demonstrate a note-taking system he invented of embossed dots to represent sounds (most of the soldiers were illiterate) that would allow notes to be passed among the ranks without striking a light, which might alert the enemy to their position.
The army was not impressed, so Barbier brought his system to the school for the blind. Louis immediately recognized its merits and spent the next three years improving upon Barbier’s idea.
In 1824, when Braille was only 15 years old, he developed a six-dot “cell” system. He used Barbier’s system as a starting point and cut its 12-dot configuration in half. The system was first published in 1829; a more complete elaboration appeared in 1837.
See lessWhat does the celebration of Global Family Day on January 1 aim at? Describe the background.
Global Family Day, celebrated on January 1 aims at commencing the new year with peace, unity and brotherhood among people and across nations and cultures. With the arrival of the new year, Global Family Day also brings along hope and promotes the idea of global unity and harmony. The idea to mark thRead more
Global Family Day, celebrated on January 1 aims at commencing the new year with peace, unity and brotherhood among people and across nations and cultures. With the arrival of the new year, Global Family Day also brings along hope and promotes the idea of global unity and harmony.
The idea to mark the day was first initiated in November 1997 after people were inspired by a book named, One Day In Peace – January 1, 2000. The book was released by the United Nations.
See lessHow long do chicken pox symptoms last?
Chickenpox symptoms usually last about 4-7 days. For most people, chickenpox isn't serious. You'll probably feel better after a week or so. The infection can be more serious in particular situations.
Chickenpox symptoms usually last about 4-7 days.
For most people, chickenpox isn’t serious. You’ll probably feel better after a week or so. The infection can be more serious in particular situations.
See lessWho first identified Calcium?
Calcium was first isolated in 1808 in England by Sir Humphry Davy when he electrolyzed a mixture of lime and mercuric oxide. As an alkaline earth metal, Calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to itsRead more
Calcium was first isolated in 1808 in England by Sir Humphry Davy when he electrolyzed a mixture of lime and mercuric oxide.
As an alkaline earth metal, Calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to its heavier homologues strontium and barium.
It is the fifth most abundant element in Earth’s crust, and the third most abundant metal, after iron and aluminium. The most common calcium compound on Earth is calcium carbonate, found in limestone and the fossilised remnants of early sea life; gypsum, anhydrite, fluorite, and apatite are also sources of calcium.
The name derives from Latin calx “lime”, which was obtained from heating limestone.
See lessWhich place is known as the "Tea Capital of the World"?
Jorhat in Assam is known as the "Tea Capital of the World". The factors responsible for tea production in Assam are ample rainfall, low altitude, humid climate, and optimum temperature.
Jorhat in Assam is known as the “Tea Capital of the World”. The factors responsible for tea production in Assam are ample rainfall, low altitude, humid climate, and optimum temperature.
See lessWhat is Silver Revolution?
Silver revolution is a process of spectacular increase in the production of eggs as well as poultry production. Indira Gandhi was the leading initiative for this revolution. This process was achieved by using hybrid cocks as well as hens and application applied science to promote the egg production.
Silver revolution is a process of spectacular increase in the production of eggs as well as poultry production. Indira Gandhi was the leading initiative for this revolution. This process was achieved by using hybrid cocks as well as hens and application applied science to promote the egg production.
See lessWho captured Constantinople in 1453?
Constantinople was besieged and conquered by the Ottoman Empire in 1453. The attacking Ottoman Army, which significantly outnumbered Constantinople's defenders, was commanded by the 21-year-old Sultan Mehmed II (later nicknamed "the Conqueror"), while the Byzantine army was led by Emperor ConstantinRead more
Constantinople was besieged and conquered by the Ottoman Empire in 1453.
The attacking Ottoman Army, which significantly outnumbered Constantinople’s defenders, was commanded by the 21-year-old Sultan Mehmed II (later nicknamed “the Conqueror”), while the Byzantine army was led by Emperor Constantine XI Palaiologos.
The city remained under its control until the early 20th century, after which it was renamed Istanbul under the Empire’s successor state, Turkey.
See lessWhat is the difference between Hydrophily and Anemophily?
ANEMOPHILY Anemophily is a type of abiotic pollination in which pollination occurs by means of wind and such flowers are known as anemophilous flowers. The anemophilous flowers produce massive amounts of pollen grains. The pollen grains of these flowers are small, smooth, dry and light in weight. ThRead more
ANEMOPHILY
Anemophily is a type of abiotic pollination in which pollination occurs by means of wind and such flowers are known as anemophilous flowers.
The anemophilous flowers produce massive amounts of pollen grains.
The pollen grains of these flowers are small, smooth, dry and light in weight.
The pollen grains of such flowers can travel a distance of more than 1000 km.
The stigmas of the flowers are comparatively large, protruding and sometimes hairy to trap the pollen grains.
In plants such as pine, the pollen grains are associated with wings which facilitate their movement with air.
Example: Madar seeds, Maple seeds, Drumstick seeds etc.
HYDROPHILY
Hydrophily is a type of abiotic pollination, in which the pollen grains are carried by water from the anther of a flower to the stigma of a flower of another plant of the same species.
These flowers are small and inconspicuous.
The male and female flowers of these plants are grown on different. Hence, they are known as dioecious plants.
They lack fragrance and do not produce nectar.
These flowers produce large amounts of pollen grains.
Their pollen grains have long, ribbon-like structure which facilitates their transportation in the current of water.
These type of flowers are seen in Vallisneria, Hydrilla, etc.
See lessWho started the Self Respect Movement?
Self-Respect Movement was started by E.V. Ramaswamy Naicker in Tamil Nadu in 1925. It was an egalitarian movement that propagated the ideologies of breaking down of the Brahminical hegemony, equal rights for the backward classes and women in the society and revitalization of the Dravidian languagesRead more
Self-Respect Movement was started by E.V. Ramaswamy Naicker in Tamil Nadu in 1925.
It was an egalitarian movement that propagated the ideologies of breaking down of the Brahminical hegemony, equal rights for the backward classes and women in the society and revitalization of the Dravidian languages like Telugu, Tamil, Kannada, and Malayalam.
Self-Respect Movement was a dynamic social movement aimed at destroying the contemporary Hindu social order in its totality and creating a new, rational society without caste, religion and God.
See lessWho established the Prarthana Samaj?
Prarthana Samaj, a leading society for socio-religious reform was established on 31 March 1867 in Bombay by Atmaram Panduranga. Prarthana Samaj meaning “Prayer Society” in English was a reformist movement. It aimed to challenge traditional social and religious practices that were prevalent at that tRead more
Prarthana Samaj, a leading society for socio-religious reform was established on 31 March 1867 in Bombay by Atmaram Panduranga.
Prarthana Samaj meaning “Prayer Society” in English was a reformist movement. It aimed to challenge traditional social and religious practices that were prevalent at that time. It involved a blend of democratic and individualistic Western beliefs and the members were believers of theism.
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