The 20th century saw the emergence of several notable Estonian physicists who contributed to various fields within physics, especially after Estonia regained independence in 1991. Some key figures include: 1. **Georg Ots**: A prominent physicist who contributed to theoretical physics and participated in research related to condensed matter physics. 2. **Erik J. L. P. Liivamägi**: Known for his work in the fields of atomic physics and quantum mechanics.

As of my last knowledge update in October 2023, there is no widely recognized figure, term, or concept known as "Kosta Alkovic." It is possible that it could refer to a private individual, a character in a specific work, or a term that has emerged after my last update.

The 19th century was a notable period for Swedish physicists, contributing significantly to various fields of science, particularly in the areas of electricity, magnetism, and optics. Here are some prominent Swedish physicists from that era: 1. **Anders Jonas Ångström (1814–1874)**: A pioneering physicist and astronomer who is best known for his work on spectroscopy.

The 20th century witnessed remarkable developments in computer technology, leading to advancements that have profoundly shaped modern society. Here’s an overview of key introductions and milestones related to computers during that period: ### Early Computing Devices (1940s) - **Mechanical Computers**: Before the electronic computer revolution, mechanical devices, such as the Analytical Engine proposed by Charles Babbage in the 19th century and later adaptions, were designed but not fully realized during that time.

In mathematics, "1990s" often refers to the decade that spans from 1990 to 1999. This does not have a specific mathematical meaning, but the 1990s were notable for several developments in various fields of mathematics. During this decade, significant progress was made in areas such as: 1. **Computer Science and Mathematics**: The rise of computational mathematics and numerical methods became more prominent, with advancements in algorithms, complexity theory, and optimization.

The 20th century was a remarkable period for Japanese physics, marked by significant contributions from various physicists who made notable advancements in different areas of the field. Here are some prominent Japanese physicists from that era: 1. **Hideki Yukawa (1907–1981)**: Yukawa is best known for his prediction of the existence of the meson, a particle that mediates the strong nuclear force.

The 20th century saw significant contributions from Australian physicists in various fields, including quantum mechanics, nuclear physics, and astrophysics. Here are some notable figures: 1. **William Lawrence Bragg (1890-1971)**: Bragg was a physicist who, along with his father, William Henry Bragg, won the Nobel Prize in Physics in 1915 for their work in X-ray crystallography.

The 20th century was a remarkable period for British physics, marked by significant contributions from numerous physicists who made groundbreaking advancements in various fields. Here are some notable British physicists from that era: 1. **J.J. Thomson (1856-1940)**: Known for discovering the electron in 1897, he was awarded the Nobel Prize in Physics in 1906 for his work on electrical conductivity in gases.

A Dedekind group is a specific type of group in the field of abstract algebra, characterized by certain structural properties. The most common definition is that a Dedekind group is a group in which every subgroup is normal. This means that for any subgroup \( H \) of a Dedekind group \( G \), the condition \( gHg^{-1} = H \) holds for every element \( g \) in \( G \).

Ahmadou Wagué is a prominent figure known for his work in the fields of civil rights or social justice, particularly within the context of African political or cultural movements. However, there might be limited specific information available or different individuals with that name.

Patrice Cellario is a notable figure in Monaco, known for his roles in local government and public service. As of my last update, he has served as the Minister of the Interior of Monaco, where he has been involved in various aspects of governance, particularly concerning the administration, public security, and urban planning within the Principality. Cellario is also associated with promoting initiatives related to safety, civic engagement, and sustainable development in Monaco.

Branca Edmée Marques is a significant figure in the field of literature, education, and social activism. She is best known as a writer, educator, and advocate for social issues, particularly those concerning women's rights and children's education. Her work often emphasizes the importance of literacy and access to education for marginalized communities.

The Demushkin group, named after the Russian mathematician Dmitry Demushkin, refers to a class of groups that arise in the study of group theory, particularly in the area of pro-p groups. A pro-p group is a class of topological groups that can be understood as inverse limits of finite groups whose orders are powers of a prime \( p \).

A bilinear form is a mathematical function that is bilinear in nature, meaning it is linear in each of its arguments when the other is held fixed.

Francisca Nneka Okeke is a Nigerian physicist and professor known for her work in the field of physics, particularly in areas related to space and atmospheric sciences. She has made significant contributions to the understanding of the ionosphere and its impact on radio wave propagation. Additionally, Okeke is an advocate for promoting science education and has been involved in various initiatives to encourage young women and girls to pursue careers in science and technology.

The great ditrigonal dodecacronic hexecontahedron is a complex geometric shape known as a polyhedron. It belongs to the category of Archimedean solids, which are a class of convex polytopes with regular polygons as faces. More specifically, it is a type of uniform polyhedron characterized by its symmetrical properties and uniform vertex configuration.

As of my last knowledge update in October 2023, there is no widely recognized figure or concept specifically known as "Jonas Vaiškūnas." It's possible that he could be a private individual, a local figure, or a person who has gained notoriety or relevance after that date.

The 2010s was a decade characterized by significant advancements and trends in computing, including: 1. **Cloud Computing**: The rise of cloud services, such as Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform, made it easier for businesses and individuals to store, process, and analyze data. Cloud computing enabled scalable and flexible resource management. 2. **Mobile Computing**: The proliferation of smartphones and tablets transformed how people interact with technology.

The term "21st-century Danish physicists" refers to a group of scientists from Denmark who have made significant contributions to various fields of physics during the 21st century. While there are many notable physicists from Denmark, a few key figures stand out: 1. **Niels Bohr** (although primarily active in the early 20th century, his legacy continues to influence modern physics) - His foundational work in quantum mechanics and atomic structure laid much of the groundwork for contemporary physics.