Franz Ernst Neumann (1798-1895) was a German mathematician and physicist known for his contributions to various fields, including geometry, mathematical physics, and crystallography. He is particularly renowned for his work on the mathematical foundations of crystallography, where he made important advancements in understanding the symmetry and structure of crystals.

Johann Wilhelm Ritter (1776–1810) was a German physicist and pioneer in the field of electrochemistry and photochemistry. He is best known for his work on the relationship between electricity and chemical reactions, as well as his research in the area of ultraviolet light. One of Ritter's significant contributions was the discovery of the chemical effects of ultraviolet light, which he termed "chemical rays.

Heinrich Friedrich Weber can refer to different individuals depending on the context, but the most notable one is a German mathematician and engineer associated with contributions to geometry and engineering fields.

Heinrich Hertz (1857–1894) was a German physicist who made significant contributions to the field of electromagnetism. He is best known for his experiments that confirmed James Clerk Maxwell's theories about electromagnetic waves. Hertz was the first to produce and detect these waves in the laboratory, demonstrating that they could travel through space and confirming that they behave similarly to light waves. The unit of frequency, the "hertz" (Hz), is named in his honor.

Karl Johann Kiessling (also spelled Karl Johann Kiessling) appears to be a historical or notable figure, but there might not be widespread information available about him in publicly accessible resources or databases. As of my last update in October 2023, he doesn't appear to be widely recognized in major historical or cultural narratives.

Johann von Lamont (1805–1879) was a notable German astronomer and physicist who played an important role in the development of astrophysics in the 19th century. He is best known for his work in the fields of celestial mechanics and astrophysics, as well as for his observations of the atmosphere and his research on the properties of light. Lamont contributed to the study of the moon, planetary motion, and various astronomical phenomena.

Julius Elster (1828–1920) was a German physicist and engineer known for his contributions to the fields of thermodynamics, electricity, and instrumentation. He is notably recognized for his work in the development of measuring instruments. Elster is particularly well-known for his collaboration with Wilhelm Geitel, with whom he created the Elster-Geitel meter, an innovative device for measuring gas consumption, which laid the groundwork for modern gas metering technology.

Julius Plücker (1801–1868) was a German mathematician and physicist known for his contributions to geometry, particularly in the field of projective geometry and analytical geometry. He is best known for his work on the Plücker coordinates, which provide a way to represent lines in space using a set of coordinates that can be used in algebraic geometry.

Thomas Ranken Lyle (1855–1942) was a prominent Australian botanist known for his contributions to the study of Australian flora, particularly in relation to the taxonomy and classification of plants. He served as a professor of botany at the University of Melbourne and was involved in various scientific and botanical societies. Lyle's work helped advance the understanding of plant species in Australia and contributed to the broader field of botany during his time.

Paul Drude was a German physicist best known for his contributions to the field of solid-state physics and for the Drude model of electrical conduction in metals. Born on December 13, 1863, and passing away on July 5, 1906, he developed his model in the early 20th century, which describes how electrons move in a metal.

James Apjohn is a notable figure primarily recognized for his contributions to various fields, particularly in chemistry and education. He is often mentioned in connection with educational initiatives, possibly in a historical context. His work may also involve recognition in specific scientific advancements or methodologies.

Wilhelm Holtz is not a widely recognized figure or term in mainstream history or popular culture. It's possible that you may be referring to a lesser-known person, a fictional character, or a specific context not widely documented. If you have additional details or context about Wilhelm Holtz, such as related fields (like literature, history, or science), I may be able to provide more relevant information. Please clarify!

Carlo Alberto Castigliano (1829-1915) was an Italian engineer and physicist known for his contributions to structural engineering and mechanics. He is best known for formulating Castigliano's theorems, which are fundamental in the analysis of elastic structures. These theorems provide methods for determining the displacements of structures under loads and have become essential tools in civil and mechanical engineering.

Carlo Matteucci was an Italian physicist and biologist, best known for his work in the field of bioelectricity. Born on June 21, 1811, and dying on December 8, 1868, he is recognized for his pioneering studies that explored the electrical phenomena associated with living organisms, particularly focusing on the electrical properties of muscle and nerve tissues.

Francesco Zantedeschi (1797–1873) was an Italian physicist and mathematician known for his contributions to the fields of electromagnetism and meteorology. He is particularly recognized for his work in experimental physics and for his studies on electrical phenomena. Zantedeschi conducted experiments that contributed to the understanding of electromagnetic induction and made notable advancements in the study of atmospheric electricity. He also had a keen interest in the interplay between science and philosophy.

Woldemar Voigt is known for his contributions to the field of mathematics, particularly in the area of mathematical analysis and the theory of functions. He is often associated with developments in topics such as the theory of analytic functions and complex variables. His work may have implications in various branches of mathematics and applied sciences.

Timoleon Argyropoulos was a prominent Greek philosopher and educator, notable for his contributions during the Renaissance period, particularly in the 15th century. He was born in Greece, but later moved to Italy, where he became involved in the intellectual and cultural revival of classical knowledge. Argyropoulos is best known for his work in translating and teaching ancient Greek texts, including works by philosophers like Plato and Aristotle.

Philipp Lenard (1862–1947) was a German physicist known for his work in experimental physics, particularly in the fields of cathode rays and photoelectric effect. He was awarded the Nobel Prize in Physics in 1905 for his investigations into the properties of cathode rays, which were among the first experiments to explore the behavior of electrons. Lenard's research contributed to the understanding of the nature of light and radiation.

Adam Frank can refer to different individuals, so the context in which you're asking is important. Here are a few notable people named Adam Frank: 1. **Adam Frank (Astrophysicist)**: He is a well-known astrophysicist, author, and professor, recognized for his work in the fields of astrophysics and science communication. He often speaks about topics such as the potential for extraterrestrial life and the future of civilization.

Galileo Ferraris (1847-1897) was an Italian physicist and engineer, best known for his contributions to the development of alternating current (AC) electrical systems and the induction motor. He made significant advancements in the understanding of electromagnetism and electromagnetic fields. Ferraris is particularly noted for inventing the induction motor in 1885, which operates on the principles of electromagnetic induction.