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2024年5月14日 · YouTube, social media platform and website for sharing videos. It was registered on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim, three former employees of the American e-commerce company PayPal. They had the idea that ordinary people would enjoy sharing their “home videos.”. The company is headquartered in San Bruno ...
- William L. Hosch
- Overview
- Demand curve
- Supply curve
economics
Also known as: consumer demand, supply
Written and fact-checked byThe Editors of Encyclopaedia Britannica
The Editors of Encyclopaedia Britannica
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.
Updated: Jan. 27, 2024
The quantity of a commodity demanded depends on the price of that commodity and potentially on many other factors, such as the prices of other commodities, the incomes and preferences of consumers, and seasonal effects. In basic economic analysis, all factors except the price of the commodity are often held constant; the analysis then involves examining the relationship between various price levels and the maximum quantity that would potentially be purchased by consumers at each of those prices. The price-quantity combinations may be plotted on a curve, known as a demand curve, with price represented on the vertical axis and quantity represented on the horizontal axis. A demand curve is almost always downward-sloping, reflecting the willingness of consumers to purchase more of the commodity at lower price levels. Any change in non-price factors would cause a shift in the demand curve, whereas changes in the price of the commodity can be traced along a fixed demand curve.
Illustration of an increase in equilibrium price (p) and equilibrium quantity (q) due to a shift in demand (D).
The quantity of a commodity that is supplied in the market depends not only on the price obtainable for the commodity but also on potentially many other factors, such as the prices of substitute products, the production technology, and the availability and cost of labour and other factors of production. In basic economic analysis, analyzing supply involves looking at the relationship between various prices and the quantity potentially offered by producers at each price, again holding constant all other factors that could influence the price. Those price-quantity combinations may be plotted on a curve, known as a supply curve, with price represented on the vertical axis and quantity represented on the horizontal axis. A supply curve is usually upward-sloping, reflecting the willingness of producers to sell more of the commodity they produce in a market with higher prices. Any change in non-price factors would cause a shift in the supply curve, whereas changes in the price of the commodity can be traced along a fixed supply curve.
Illustration of an increase in equilibrium price (p) and a decrease in equilibrium quantity (q) due to a shift in supply (S).
3 天前 · Puerto Rico, self-governing island commonwealth of the West Indies, associated with the United States.The easternmost island of the Greater Antilles chain, it lies approximately 50 miles (80 km) east of the Dominican Republic, 40 miles (65 km) west of the Virgin Islands, and 1,000 miles (1,600 km) southeast of the U.S. state of Florida.
6 天前 · His stay in England was one of the most formative periods of his life. Montesquieu, French political philosopher whose principal work, The Spirit of Laws, was a major contribution to political theory. It inspired the Declaration of the Rights of Man and the Constitution of the United States. Learn more about Montesquieu’s life and work.
