Pelagonia is one of the statistical regions of North Macedonia. It is located in the southwestern part of the country and is known for its rich agricultural land, historical sites, and a mix of cultural influences due to its proximity to neighboring countries. The region is also characterized by its mountainous terrain and has a variety of natural resources. The main city in Pelagonia is Bitola, which is notable for its historical significance and vibrant cultural life.

Goro Nishida is a Japanese term that typically refers to a specific style of painting or art. More specifically, it can be associated with a traditional Japanese style characterized by its use of bold colors and intricate patterns. However, it's important to note that "Goro Nishida" may also refer to a specific individual, but without additional context, it's difficult to identify exactly who or what you may be referring to.

Cuthbert Daniel is a name that might refer to various subjects, depending on the context, such as a historical figure, a fictional character, or even a brand or organization. However, as of my last knowledge update in October 2023, no widely recognized figure or concept under the name "Cuthbert Daniel" stood out significantly in popular culture or historical records.

Geoffrey Shepherd can refer to various individuals, but the most relevant one in a historical or scholarly context is Geoffrey of Monmouth, a 12th-century cleric and historian known for his work "Historia Regum Britanniae," which chronicles the history of Britain and includes the legendary tales of King Arthur.

The HNN extension, named after the mathematicians Graham Higman, B. H. Neumann, and Hanna Neumann, is a construction in group theory that allows the creation of new groups from existing ones. Specifically, an HNN extension is a type of group that is used to generalize the notion of groups with an additional structure, particularly when it comes to accommodating certain types of relations between groups.

Funding:

This section discusses the pre-photon understanding of the polarization of light. For the photon one see: photon polarization.

polarization.com/history/history.html is a good page.

People were a bit confused when experiments started to show that light might be polarized. How could a wave that propages through a 3D homgenous material like luminiferous aether have polarization?? Light would presumably be understood to be analogous to a sound wave in 3D medium, which cannot have polarization. This was before Maxwell's equations, in the early 19th century, so there was no way to know.

Bdellium is a gum resin that is obtained from certain trees in the genus Commiphora, which are part of the Burseraceae family. The term "bdellium" is sometimes used to refer to a resin similar to myrrh. Historically, bdellium has been mentioned in ancient texts, including the Bible, where it is described as a valuable substance. The resin has been used for various purposes, including as an ingredient in perfumes, incense, and traditional medicine.

Dirac field.

"Seasons" typically refers to the four divisions of the year based on the tilt of the Earth's axis and its orbit around the Sun. These divisions—spring, summer, autumn (or fall), and winter—are characterized by changes in weather, daylight, and ecology. 1. **Spring**: Usually associated with warmer temperatures, blooming flowers, and new growth. It's often seen as a time of renewal and rejuvenation.

A nautical mile is a unit of measurement used primarily in maritime and aviation contexts to measure distances over the Earth's surface. One nautical mile is defined as exactly 1,852 meters (or approximately 1.15078 statute miles). The nautical mile is based on the circumference of the Earth and is equivalent to one minute of latitude.

Once the ball starts rolling, these are people who should be contacted.

Basically anything under educational charitable organization counts.

It is also worth having a look under the Wikipedia page for open educational resources: en.wikipedia.org/wiki/Open_educational_resources