How do you heat air?

How do you heat air? Even the common steam radiator depends more on convection than on radiation for heat emission. Hot-water heating. Water is especially favoured for central-heating systems because its high density allows it to hold more heat and because its temperature can be regulated more easily. Steam heating. Electric heat. Heat pump. Can […]

Who was offered Die Hard first?

Who was offered Die Hard first? Frank Sinatra Who first said Yippee-Ki-Yay? Yippee came about after yip. The earliest record of this exclamation of delight is from 1920 in Sinclair Lewis’s novel, Main Street: “She galloped down a block and as she jumped from a curb across a welter of slush, she gave a student […]

What worms shed their skin?

What worms shed their skin? The hookworm Necator americanus is found in tropical climates and gets into the body through the skin, usually when trodden on barefoot. The worm then sheds its own skin, which is thought to trigger an immune response. What is the white stuff that comes out of earthworms? The white stuff […]

What products is Panama known for?

What products is Panama known for? Agriculture in Panama is an important sector of the Panamanian economy. Major agricultural products include bananas, cocoa beans, coffee, coconuts, timber, beef, chicken, shrimp, corn, potatoes, rice, soybeans, and sugar cane. In 2009 agriculture and fisheries made up 7.4% of Panama’s GDP. What are the most popular souvenirs? Most […]

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