Understanding Metal Corrosion: Types, Causes, and Control
Corrosion is the destructive attack of a material by chemical or electrochemical reaction with its environment. When etching is accompanied by physical damage, then there is corrosion-erosion, or corrosive wear by friction.
- It is a natural process; there is a transformation of the material to a more stable compound, which is an oxide.
- Plastic or wood do not corrode; they can crack or break down.
- Corrosion of iron leads to oxidation.
Two Kinds of Corrosion
- Dry: When an attack occurs via a chemical reaction,
Understanding Motion, Velocity, and Acceleration in Physics
What is Motion?
Motion is a physical phenomenon defined as any change of position in space that bodies in a system experience with respect to themselves or another body, which is taken as a reference. Any body in motion describes a path. The description and study of a body’s motion require determining its position in space versus time. This requires a reference system.
What is a Frame of Reference?
A reference system or framework is a set of conventions used by an observer to measure the position and
Read MoreDurkheim’s Sociological Insights on Social Facts
Rules Relating to the Observation of Social Facts
When a new order of phenomena becomes the object of science, such phenomena are already represented in the spirit not only by sensitive images, but also by certain concepts crudely formed. Therefore, reflection is prior to science, and science is responsible for using only the reflection of a more methodical manner. Man cannot live with things without formulating ideas about them, and regulating their conduct according to these ideas.
Social phenomena
Read MoreHuman Digestive System: Anatomy and Function
Mouth
The mouth is divided into two parts: the oral vestibule, which is the space between the inside of the lips and the outer face of the teeth, and the oral cavity itself, which runs from the teeth internally to the entrance of the pharynx. The roof of the mouth is formed by the hard palate and soft palate, which is composed of muscle and covered by mucosa. In the midline of the soft palate, a small mass called the uvula projects downward. The mouth communicates with the pharynx through the fauces,
Read MoreRene Descartes and David Hume: Methods and Metaphysics
Rene Descartes
The Cartesian Method
Descartes states that the method is “a certain set of rules, and easy, such that anyone observing them will never take something false as true, and without the cost of mental effort, but by increasing their knowledge step by step, reaches a true understanding of all the things that do not exceed their capacity.”
The method is to be applied logically to the operating mode of reason and is thus proposed here as we see Descartes‘ intuition and deduction as the only
Read MoreGreek Sculpture: Evolution and Influence on Western Art
The Evolution of Greek Sculpture: Fundamentals of Greek Art and Its Projection in the Western World
No one can deny the important role played by the Greek civilization in Western culture. Philosophy, history, and democracy were born in Greece, and great advances were made in mathematics and artistic creation. Its aesthetic principles have endured to this day, playing a key role in Rome, the Renaissance, and Neoclassicism. Works of art have been valued for their proximity or remoteness to Greek aesthetic
Read MoreRenaissance Philosophy and the Rise of Modern Science
Renaissance Context and the Dawn of Modern Science
Modern philosophy emerged in the fifteenth century, following the crisis of scholasticism. This period saw the rise of a new cultural movement known as the Renaissance (XV-XVI). The defining characteristic of this era was a radical critique of medieval culture, with an alternative proposal to restore classical culture for two primary reasons:
- The Middle Ages were perceived as a time of barbarism and darkness.
- Ancient Greeks and Romans were believed
Strategic Marketing Mix: Product, Price, Distribution, and Communication
Item 19: Decisions in the Marketing Mix
19.1 Concept of Marketing Mix
To design marketing strategies, marketers have some basic tools available. These tools must be properly combined to achieve the objectives set. They can be summarized in four controllable variables of the trading system, the Four P’s: product, price, distribution, and promotion. These instruments are considered controllable variables that can be modified. However, these modifications are only possible within limits. The marketing
Read MoreJosé Ortega y Gasset: Philosophy of Vital Reason and Perspectivism
The Meaning of Philosophy
For Ortega, philosophy is vital. Human beings have a vital need to understand the universe and “all there is.” However, philosophy currently finds itself at a dead end due to the opposition between realism and idealism, which it must now overcome.
Critique of Realism and Idealism
Ortega criticizes idealism for considering the subject as the axis around which reality revolves. He also criticizes realism for considering the subject merely a part of reality. Ortega understands
Read MoreKey Techniques in Visual Communication
Visual Communication Techniques
Balance
This technique is based on human perception, and there is a center of gravity midway between two steps.
Instability
It is the lack of balance and visual expressions with disturbing results.
Regularity
Uniformity is the order of elements in which no deviations are allowed.
Irregularity
Enhances the unexpected without following any plan.
Simplicity
It imposes directness and a simple form, free from complications.
Complexity
It involves a visual complication due to the presence
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