- how to make a compass with needle and magnet
- The South Pointing Spoon (hakaimagazine.com)
On a bronze plate, the little metal spoon balances exquisitely on its bowl. Each time it’s tossed or spun, it comes to rest with its neck aiming south. This is a replica of the aptly named south pointing spoon, thought to be the first magnetized object ever used to tell direction. And it was the crucial precursor to the magnetic compass, one of the most important inventions in maritime history.
- What does “corruption of blood” mean?
Often a Bill of Attainder not only decreed that a person (or people) was guilty, but also confiscated the convicted person’s property, preventing his (or rarely her) heirs from inheriting, and possibly rendering those heirs ineligible to hold public offices or peerages. The heir would also be prevented from inheriting through the attainted person. For example, property held by the father of the attainted person would not pass to the child of the attainted person. This was called “corruption of the blood”, and was viewed with particular horror by many during the colonial period and before. It effectivly treated the heirs of the attainted person as illegitimate.
- Compass (Wikipedia)
A compass is a device that shows the cardinal directions used for navigation and geographic orientation. It commonly consists of a magnetized needle or other element, such as a compass card or compass rose, which can pivot to align itself with magnetic north. Other methods may be used, including gyroscopes, magnetometers, and GPS receivers.
