The Delphic Hymns are a pair of ancient Greek hymns that were composed in honor of the god Apollo and were performed at the Delphic Oracle, a prominent religious site in ancient Greece. These hymns are notable for their musical notation, making them some of the earliest examples of written music that have survived to modern times.
Hippocrates of Chios (circa 460–370 BCE) was an ancient Greek mathematician and philosopher known for his contributions to geometry and mathematical science. He is best known for his work on the properties of geometric figures, particularly in the context of Euclidean geometry.
Plato was an ancient Greek philosopher who lived from approximately 427 to 347 BCE. He is one of the most influential figures in Western philosophy and is best known for his works that explored various topics including ethics, politics, metaphysics, epistemology, and aesthetics. Plato was a student of Socrates and the teacher of Aristotle, forming a foundational trio in Western philosophical thought. His writings are often in the form of dialogues, featuring Socratic questioning and discussion.
Aristotle was an ancient Greek philosopher and scholar who lived from 384 to 322 BCE. He is one of the most influential figures in Western philosophy and has made significant contributions to various fields, including ethics, metaphysics, politics, logic, biology, and aesthetics. Aristotle was a student of Plato and later became a teacher himself, founding his own school known as the Lyceum in Athens.
Chrysippus was an ancient Greek philosopher who lived from approximately 280 to 206 BCE. He is best known as a prominent figure in the Stoic school of philosophy. Chrysippus played a crucial role in developing Stoic thought, particularly in areas such as logic, ethics, and physics. He is often credited with systematizing and expanding the teachings of earlier Stoics, including Zeno of Citium, the founder of Stoicism.
Anaxagoras was an ancient Greek philosopher who lived from around 500 to 428 BCE. He is best known for introducing the concept of "nous," or "mind," as a cosmic principle that organizes and gives order to the universe. Anaxagoras is often regarded as a pre-Socratic philosopher, and he is notable for his contributions to metaphysics and natural philosophy.
Heliodorus of Larissa was a prominent figure in ancient Greek philosophy and rhetoric, specifically associated with the school of Sophists. He is best known for his contributions to the philosophical debates of his time and for his role in the intellectual scene of 4th-century BCE Greece, particularly in the city of Larissa in Thessaly.
Carpus of Antioch was a Christian martyr and saint who is commemorated in the Christian tradition, particularly within the Eastern Orthodox and Roman Catholic Churches. He is often recognized as a martyr who suffered for his faith during the early years of Christianity, around the 2nd or 3rd century. Carpus is generally associated with the city of Antioch, an important early center of Christianity. His life and martyrdom are often linked to broader stories of Christian persecution during that period.
Metrodorus, often referred to as Metrodorus of Scepsis, was a notable ancient grammarian and scholar who lived around the 2nd century BCE. He is recognized primarily for his works related to language, grammar, and the interpretation of texts, particularly in the context of ancient Greek literature. Although not as widely known as some other figures in classical scholarship, his contributions are significant in understanding the development of grammar and philology during his time.
Philolaus was a Greek philosopher from the Pythagorean school, active around the 5th century BCE. He is best known for his work on cosmology and philosophy, particularly in relation to mathematics and music. Philolaus is notable for his belief that the Earth is not the center of the universe, an idea that predates and anticipates later heliocentric models.
Gumblar is a type of web-based malware that primarily targets websites running on content management systems (CMS) like WordPress, Joomla, and others. It is named after the Gumblar.com domain, which was used by attackers to distribute the malware. The malware typically spreads through compromised websites, often by exploiting security vulnerabilities, and it can inject malicious scripts into the pages of infected sites.
The term "Philon" could refer to several different things depending on the context. Here are a few possibilities: 1. **Philo of Alexandria**: A Hellenistic Jewish philosopher who lived in Alexandria in the first century CE. He is known for blending Greek philosophy, particularly Stoicism and Platonism, with Jewish religious thought. 2. **Philon (spelling variation)**: This could refer to a name or a specific brand, product, or organization.
Antiphon of Athens (c. 480 – c. 411 BC) was a pre-Socratic philosopher and a Sophist, known for his contributions to philosophy and rhetoric, especially in the realm of social and political thought. He is often considered one of the early figures in the development of political theory and moral philosophy.
The Seikilos Epitaph is an ancient Greek inscription that is considered one of the oldest known complete musical compositions. It dates back to around the 1st century CE and was discovered on a tombstone in modern-day Turkey. The epitaph is notable for its combination of a poetic text and musical notation, which serves as both a memorial and a reflection on the transient nature of life. The inscription includes lyrics that express themes of love, life, and the inevitability of death.
Joachim Sauer is a German chemist, known primarily for his work in the field of theoretical chemistry and catalysis. He is also notable for being the husband of Angela Merkel, the former Chancellor of Germany. Sauer has had a distinguished academic career, serving as a professor and researcher in various institutions. His contributions to science, particularly in the study of chemical processes and reactions, have been recognized within the scientific community.
The Petersberg Climate Dialogue is an informal diplomatic meeting aimed at fostering international collaboration on climate change issues. It was initiated by Germany in 2010 and typically involves ministers from various countries, particularly those involved in the United Nations Framework Convention on Climate Change (UNFCCC) negotiations. The dialogue provides a platform for participants to discuss key climate policy issues, share best practices, and coordinate actions in the lead-up to major international climate conferences, such as the annual Conference of the Parties (COP).
"Wir schaffen das," which translates to "We can do it" or "We will manage it," is a phrase famously associated with German Chancellor Angela Merkel. She used it in 2015 to express confidence in Germany's ability to handle the influx of refugees and migrants during the European migrant crisis. The phrase became emblematic of Germany's approach to immigration and refugee policy at the time, highlighting both the challenges and the humanitarian commitments involved.
Perceived visual angle refers to the angular size of an object as it appears to an observer's eye, taking into account the object's size and distance from the observer. It is a psychological perception rather than a physical measurement, meaning it involves how we interpret and experience the size of an object. The perceived visual angle can be influenced by various factors, including: 1. **Distance**: As an object moves further away from the observer, its perceived size decreases, even though its actual size remains constant.
The Capital Recovery Factor (CRF) is a financial formula used to determine the annual amount that must be set aside to recover a capital investment over a specific period of time while accounting for interest or discounting rates. It is often applied in engineering economics, project management, and finance to evaluate the cost implications of capital assets and investments.
Pinned article: Introduction to the OurBigBook Project
Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
Intro to OurBigBook
. Source. We have two killer features:
- topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculusArticles of different users are sorted by upvote within each article page. This feature is a bit like:
- a Wikipedia where each user can have their own version of each article
- a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.Figure 1. Screenshot of the "Derivative" topic page. View it live at: ourbigbook.com/go/topic/derivativeVideo 2. OurBigBook Web topics demo. Source. - local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
Figure 3. Visual Studio Code extension installation.Figure 4. Visual Studio Code extension tree navigation.Figure 5. Web editor. You can also edit articles on the Web editor without installing anything locally.Video 3. Edit locally and publish demo. Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.Video 4. OurBigBook Visual Studio Code extension editing and navigation demo. Source. - Infinitely deep tables of contents:
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact





