evaporation

what causes water to evaporate

every fluid (pure) has a definite vapor pressure at a fixed temperature , now if any how the partial pressure of the fluid is less then the the vapor pressure of the fluid then the fluid starts evaporating to attain the partial pressure equal to the vapor pressure of the fluid, and then the equillibrium is reached and evaporation stops.

basically at the top of the fluid there is a random motion of the fluid molecule due to the difference between the addhesve and cohesive forces, some molecule say 'n' goes into the vapour phase and some strikes back say m such that n>m then after the above explained condition is achieved then the constraint m=n.

conclusion

whenever there is the fluid in liquid state is present then in that system partial pressure is exactly to the vapor pressure.

and whenever there is no fluid in liquid state is present then partial pressure is always less then the vapor pressure.

geographical context

let us consider two location having altitude h1 and h2 they both have the same temperature t0 in such case ice at high altitude there is less partial pressure of water vapour since it is very heavy so amount of evaporation is high in the h1 region then in the h2 region.

Peasant movement during freedom struggle

Unlike the earlier peasant movements that arose from discontentment among the peasantry, the peasant movements in the twentieth century were influenced by national freedom struggle. This phase witnessed an increased involvement of middle-class, modern educated class in peasant resistance movements. This led to percolation of the idea of nationalism among the peasantry too. Gandhian Peasant Movements These movements were essentially non violent in nature. Satyagraha (fast unto death) was the defining feature of these moments to build moral pressure on britishers to accept their demands. Champaran Satyagraha 1917 : In Champaran, the peasants were agitating against the planters who were forcing the peasants to grow indigo under the exploitative tinkathia system . This system forced cultivation of indigo in 3/20th of land held by the peasant. One of their leaders, Raj Kumar Sukul invited Gandhi to resolve the issue. Gandhi led the movement by launching satyagraha and mobilised the peasan...

Different perspective of Freedom-----market economy vs social stability

What we can define we can control, perhaps this is the reason why we cant define emotion. This article is all about Freedom and its scope. I will define freedom as this article progresses towards required point. Pre-requisite: Cost of Happiness: happiness is not something static, it’s a dynamic concept and its directly linked to the edge of our freely floating mind . In other words if someone/something is responsible for your happiness(social/sexual/psychological) wont last long until and unless there is some desirable or at least some socially acknowledgeable value is added to the status quo. Now since this change traces the edge of our freely floating mind (and our mind tend to spread to the extreme extant of our economic/social/psychological reach) it becomes difficult or rather costly to continuously sustain this change. I call it cost of happiness , that we have to keep paying . Biasness: Lack of knowledge is called biasness. If ...

आजादी

जिसे हम परिभाषित कर सकते हैं उसे हम नियंत्रित कर सकते हैं, शायद यही कारण है कि हम भावनाओं को परिभाषित नहीं कर सकते। यह लेख सभी स्वतंत्रता और इसके दायरे के बारे में है। मैं स्वतंत्रता को परिभाषित करूंगा क्योंकि यह लेख आवश्यक बिंदु की ओर बढ़ता है। पूर्व-अपेक्षा: खुशी की लागत: खुशी कुछ स्थिर नहीं है, यह एक गतिशील अवधारणा है और इसका सीधा संबंध हमारे स्वतंत्र रूप से तैरने वाले दिमाग से है। दूसरे शब्दों में अगर कोई / कुछ आपकी खुशी के लिए ज़िम्मेदार है (सामाजिक / यौन / मनोवैज्ञानिक) लंबे समय तक नहीं होगा और जब तक कि कुछ वांछनीय या कम से कम कुछ सामाजिक रूप से स्वीकार्य मूल्य को यथास्थिति में नहीं जोड़ा जाता है। अब चूंकि यह परिवर्तन हमारे स्वतंत्र रूप से तैरने वाले मन के किनारे का पता लगाता है (और हमारा दिमाग हमारी आर्थिक / सामाजिक / मनोवैज्ञानिक पहुंच के चरम विस्तार तक फैलता है) इस परिवर्तन को निरंतर बनाए रखना मुश्किल या महंगा हो जाता है। मैं इसे खुशी की कीमत कहता हूं, कि हमें भुगतान करते रहना है। Biasness: ज्ञान की कमी को पूर्वाग्रह कहा जाता है। यदि आप किसी विशेष धर्म, संबंध, सरक...

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