Podcast
Questions and Answers
What is the name of the city that was known as Indraprastha in the 6th century BC?
New Delhi
Who designed the city of New Delhi in 1912?
British architects Edwin Lutyens and Herbert Baker
What is the approximate area of New Delhi in square kilometers?
1,484
What are the three most widely spoken languages in New Delhi?
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What is the name of the official residence of the President of India located in New Delhi?
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What is the name of the famous festival held in New Delhi, which features cultural events and performances?
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What is the unit of measurement for thermal conductivity?
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How does the presence of impurities affect the thermal conductivity of metals?
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What crystal structure is commonly associated with high thermal conductivity in metals?
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Which metal has the highest thermal conductivity at room temperature?
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What is a common application of high thermal conductivity metals in electronic devices?
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What material has the highest thermal conductivity among all materials?
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Study Notes
Location and History
- New Delhi is the capital of India, located in the National Capital Territory (NCT) of Delhi.
- The city has a long history, dating back to the 6th century BC when it was known as Indraprastha.
- New Delhi was designed by British architects Edwin Lutyens and Herbert Baker in 1912 and officially became the capital of India in 1927.
Geography and Climate
- New Delhi is situated in the northern part of India, near the Yamuna River.
- The city has an area of approximately 1,484 square kilometers.
- New Delhi has a humid subtropical climate with very hot summers and mild winters.
Economy and Demographics
- New Delhi is a major hub for trade, commerce, and industry, with a strong service sector.
- The city has a population of over 29 million people, making it one of the most populous cities in the world.
- Hindi, Punjabi, and Urdu are the most widely spoken languages in the city.
Landmarks and Attractions
- The city is home to many historical landmarks, including the Qutub Minar, Red Fort, and India Gate.
- The Rashtrapati Bhavan, the official residence of the President of India, is also located in New Delhi.
- The city hosts many cultural events and festivals, including the Republic Day parade and the Qutub Festival.
Location and History
- New Delhi is the capital of India, situated in the National Capital Territory (NCT) of Delhi.
- The city has a rich history, dating back to the 6th century BC, when it was known as Indraprastha.
Geography and Climate
- New Delhi is located in the northern part of India, near the Yamuna River.
- The city covers an area of approximately 1,484 square kilometers.
- New Delhi has a humid subtropical climate, characterized by very hot summers and mild winters.
Economy and Demographics
- New Delhi is a major hub for trade, commerce, and industry, with a strong service sector.
- The city has a massive population of over 29 million people, making it one of the most populous cities in the world.
- Hindi, Punjabi, and Urdu are the most widely spoken languages in the city.
Landmarks and Attractions
- The city is home to many historical landmarks, including the Qutub Minar, Red Fort, and India Gate.
- The Rashtrapati Bhavan, the official residence of the President of India, is located in New Delhi.
- The city hosts many cultural events and festivals, including the Republic Day parade and the Qutub Festival.
Thermal Conductivity of Metals
- Thermal conductivity (k) measures a material's ability to conduct heat, measured in Watts per meter per Kelvin (W/m·K)
Factors Affecting Thermal Conductivity of Metals
- Higher electron density increases thermal conductivity
- Face-centered cubic (FCC) crystal structure tends to have higher thermal conductivity than body-centered cubic (BCC) structure
- Impurities decrease thermal conductivity
- Thermal conductivity generally increases with temperature, but may decrease at very high temperatures
Thermal Conductivity of Common Metals
- Copper: 386 W/m·K (highest among metals at room temperature)
- Silver: 429 W/m·K (highest among metals at high temperatures)
- Aluminum: 237 W/m·K
- Iron: 79.5 W/m·K
- Tungsten: 173 W/m·K
Applications of High Thermal Conductivity Metals
- Copper and silver are used in heat sinks for electronic devices
- Copper and aluminum are used in cookware for efficient heat transfer
- High thermal conductivity metals are used in aerospace applications to manage heat generated by engines and friction
Comparing Thermal Conductivity of Metals to Other Materials
- Diamond: 2000-2500 W/m·K (highest among all materials)
- Graphite: 100-200 W/m·K
- Ceramics: 1-10 W/m·K
- Polymers: 0.1-1 W/m·K
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Description
Explore the history of New Delhi, from its ancient roots to its modern-day capital status. Learn about the city's geography and climate.
