Who was the first person in a photo?

Who was the first person in a photo? To celebrate the remarkable history of photographic science on World Photography Day, we take a closer look at the first photograph of a human ever taken. The earliest known photograph of a human appeared in a snapshot taken in 1838 by Louis Daguerre. Why do models not […]

What causes calipers to freeze up?

What causes calipers to freeze up? Caliper Slides – the slides located in the caliper can freeze due to lack of lubrication, corrosion or debris build-up. When the caliper cannot slide properly in or out, this causes the brake caliper assembly to stick. How do you fix a frozen caliper? To remove a caliper piston […]

What is considered your permanent address?

What is considered your permanent address? A permanent address is a physical street address that is under your name. Examples of permanent addresses would be a home or office address. Such addresses can be transferred over & changed by completing a Change of Address form with the USPS. What determines your legal residence? A California […]

Who built the Great Wall of China?

Who built the Great Wall of China? Emperor Qin Shi Huang Why did the Chinese build the Great Wall of China? Over the centuries, the Great Wall has been built and rebuilt for three main purposes: as kingdom border defenses, to defend China’s northern border, and for tourism. Does Egypt mean black? Mainstream scholars reject […]

What does a rotten hard-boiled eggs smell like?

What does a rotten hard-boiled eggs smell like? Perhaps the most common problem with hard-boiled eggs is overcooking. That’s what happens when the yolks are pale yellow with that familiar green band around the outside. There is frequently the odor of sulfur. This is due to a reaction between traces of iron in the yolk […]

What animal does neckbone come from?

What animal does neckbone come from? pork-neck-bones. A pork “neck bone” is the part of the hogs bone structure that goes from the top of the back bone to the shoulder. When the hog is broken down the neckbone is removed from the shoulder. They are used in many receipes, especially after they are smoked, […]

Who is known as the father of topology?

Who is known as the father of topology? His most famous example was a non-orientable surface, which is now called the Möbius strip. The Russian born mathematician Georg Ferdinand Ludwig Philipp Cantor, the father of set theory, is another mathematician to whom we owe credit for topology….Topology/History. Topology ← Introduction History Basic Concepts Set Theory […]

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