Led Bulb working Principle

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Working principle of Led A led bulb is a semiconductor device that emits light when electricity passed through it. The colour of the light depends on the material used in the led making. With the help of chemical compounds like Gallium Arsenide and Gallium Phosphide, a Led bulb that gives red, green, yellow, and orange … Read more

Rajaji national park Upsc

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Rajaji National Park is an Indian National Park and Tiger Reserve. It is situated in the region of Shivaliks near the Himalaya foothills. It spans over 820 Km and includes the Haridwar, Dehradun, and Pauri Garhwal districts of Uttarakhand State of India.

Special hero poem Tnpsc

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When I was a baby, you would hold me in your arms. I felt the love and tenderness, keeping me safe from harm. I would look up into your eyes, and all the love I would see. How did I get so lucky, you were the dad chosen for me. There is something special about … Read more

The stick-together families poem Tnpsc

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The stick-together families are happier by far Than the brothers and the sisters who take separate highways are. The gladdest people living are the wholesome folks who make A circle at the fireside that no power but death can break. And the finest of conventions ever held beneath the sun Are the little family gatherings … Read more

The comet poem Tnpsc

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The Comet, Poem is written by Norman Littleford (18 May 1889 – 20 May 1947). He was an American Poet who was born in Maryland, USA. Norman Littleford’s works were about life and nature. Most of his are simple and deep in thought. His poems provoke the readers to absorb abnormal ideas. Rampaging through the … Read more

The river poem tnpsc

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River, river, little river! Bright you sparkle on your way; O’er the yellow pebbles dancing, Through the flowers and foliage glancing, Like a child at play. River, river! Swelling river! On you rush through rough and smooth; Louder, faster, brawling, leaping. Over rocks, by rose-banks, sweeping Like impetuous youth. River, river! Brimming river! Broad and … Read more

On Killing a Tree Tnpsc

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It takes much time to kill a tree, Not a simple jab of the knife Will do it. It has grown Slowly consuming the earth, Rising out of it, feeding Upon its crust, absorbing Years of sunlight, air, water, And out of its leperous hide Sprouting leaves. No, The root is to be pulled out … Read more

A Poison Tree Tnpsc

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I was angry with my friend; I told my wrath, my wrath did end. I was angry with my foe: I told it not, my wrath did grow. And I water’d it in fears, Night and morning with my tears: And I sunned it with smiles, And with soft deceitful wiles. And it grew both … Read more

The House on Elm Street Tnpsc

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It sat alone. What happened there is still today unknown. It is a very mysterious place, And inside you can tell it has a ton of space, But at the same time it is bare to the bone. At night the house seems to be alive, Lights flicker on and off. I am often tempted … Read more

* * All the Notes in this blog, are referred from Tamil Nadu State Board Books and Samacheer Kalvi Books. Kindly check with the original Tamil Nadu state board books and Ncert Books.