Notes, summaries, assignments, exams, and problems for Secondary education

The Age of Revolution

• 1776-1871
• The American Revolution
• Thirteen British colonies in Eastern North America
• Economy based on agriculture and trade
• Black slaves worked in agriculture
• Britain had the monopoly of trade
• Political tensions: Settlers payed taxes but did not have political representation. Rejection to buy British products. Boston Tea Party: attack against a ship with tea [ outbreak of the Revolutionary War
• The conflict brought political changes: Jefferson wrote the Virginia declaration of Rights. 1776 Declaration of Independence
• The American Revolutionary War: Colonies were supported by France and Spain. Washington victories Britain recognised independence. Treaty of Versailles 1783. 1787 United States Constitution. 1789 Washington first American

Market Structures

Perfect Competition: many buyers & sellers of a standard product & easy entrance & exit (ex: oranges)

Monopolistic Competition: many buyers & sellers of slightly differentiated products & easy entrance & exit (fast food)

Oligopoly: few businesses and entry to industry is restricted (cars & cellphones)

Monopoly: one business supplies a product w/ no close substitutes (debeers diamonds)

Key Concepts

Entry Barriers: increasing returns to scale, market experience, restricted ownership of resources, legal obstacles, market abuses, advertising

Market Power: a business's ability to affect the price of the product it sells

Revenue

Average Revenue: the extra total revenue earned from an additional unit of output... Continue reading "Understanding Market Structures and Competition" »

William Blake: Poet, Painter, and Radical Visionary

William Blake was born in London in 1757. His origins were humble, and he remained poor all his life. He studied at the Royal Academy of Arts.

As a painter and engraver, Blake emphasized the power of the imagination. He was a political freethinker and remained a radical throughout his life.

Rejection of Neoclassicism

Blake is regarded as an Early Romantic because he rejected neoclassical literary style and themes. He emphasized the importance of imagination over reason and believed that ideal forms should be created not from the observation of nature but from inner visions.

His prose work often consisted of a mixture of aphorisms, anecdotes, and proverbs.

Blake's Philosophy of Complementary Opposites

Blake... Continue reading "William Blake's Vision: Imagination, Dualism, and Early Romanticism" »

Common English Irregular Verbs

Sound is the sensation we experience when sound waves reach our ears. Noise is usually defined as something that sounds bad. The difference between sound and noise is that the wave of a sound is regular and the wave of a noise is irregular. The apparatus used to measure noise is called a sound level meter. The level of noise is measured in decibels (dB). Silence is the absence of sound or noise. Pitch is the quality of sound which makes a distinction between low and high sounds. Duration is the quality which differentiates between long and short sounds. The dynamic intensity is the quality that distinguishes between loud and soft sounds. Timbre is the quality of sound which indicates who or what is producing it. We often use the word soundtrack... Continue reading "Understanding Sound: The Difference Between Sound and Noise" »

Merkle Trees and Data Verification

A Merkle Tree is a method of structuring data that allows a large body of information to be verified for accuracy extremely quickly and efficiently. Every Merkle tree results in a single string of data, known as the Merkle root. With the Merkle root, plus a few other pieces of data, any computer can efficiently validate all of the other entries in the Merkle tree. Merkle trees are used in distributed systems for efficient data verification. They are efficient because they use hashes instead of full files. Hashes are ways of encoding files that are much smaller than the actual file itself.

Key Blockchain Components

• Block: A block, sometimes called a physical record, is a sequence of bytes or bits, usually containing

Nuclear Energy Fundamentals

Defining Nuclear Energy

Nuclear energy originates from the fission of atomic nuclei, which releases immense amounts of energy. This high energy yield allows for substantial power generation from a relatively small quantity of fuel. While often discussed in the context of energy independence, it's important to note that current nuclear power relies on finite resources like uranium.

The Fission Process: How Electricity is Generated

The nuclear energy process can be categorized into two primary forms: fission and fusion. Currently, commercial nuclear energy generation relies solely on fission. Fusion, however, remains an experimental technology, as scientists have not yet found a sustainable way to moderate and contain... Continue reading "Nuclear Power Generation: Fission, Benefits, and Risks" »

Introduction

The Rapa Nui are the indigenous Polynesian habitants of Easter Island in the Pacific Ocean. The easternmost Polynesian culture, the descendants of Easter Island's original peoples make up about 60% of Easter Island's current population & a significant part of its population resides on Chile's mainland. They speak both the traditional Rapa Nui language & Chile's primary language, Spanish.

History

Rapa Nui R believed 2 have settled Easter Island between 300 & 1200 CE. Previously, the date of arrival was estimated 2 be around 700–800 CE, but more-recent evidence demostrate other date. Jacob Roggeveen was the 1st European 2 record contact with the Rapa Nui. Roggeveen allready set sail either in search of Juan Fernandez Islands... Continue reading "Discovering the Rapa Nui: History, Culture, and Moais" »