Mechanical Devices: Levers, Gears, Cams & Motion Systems
What Are Mechanical Mechanisms?
A mechanism is simply a device that takes an input motion and force and outputs a different motion and force. The purpose of a mechanism is to make a task easier to perform. The most commonly used mechanisms in mechanical systems include:
- Levers
- Linkages
- Cams
- Gears
- Pulleys
Understanding Levers
It’s important to understand how to calculate mechanical advantage obtained by using levers, the velocity ratio in levers and pulley systems, and the input and output speed when using
Read MoreEnglish Exercise Answers: Reading, Vocabulary, Grammar
Reading Comprehension Answers
Exercise 1
- Many people thought… their popularity was declining.
- Harry Potter helped… make boarding schools popular again.
- Some non-British parents… interest is not as high as in the UK.
- Non-British parents send… [their children] to speak fluent English and have a better chance of being accepted into a top British university.
- According to the writer… these boarding schools have turned out to be so popular.
Exercise 2
- What example does the writer…? A long list of
René Descartes: Life, Philosophy, and the Rationalist Shift
Descartes’ Early Life and Education
René Descartes was born in March 1596 in La Haye. At an early age, René entered college as an intern at La Flèche, a newly founded institution established with the help of Henry IV to form a nobility as a weapon against the Protestant Huguenots. Once he left school, he decided to join the troops of Maurice of Nassau in the Thirty Years’ War to see the world and strengthen his character.
The Turbulent 17th Century Context
This war was perhaps an event caused by
Read MoreAtomic Structure, Electron Configuration, and Chemical Properties
Bohr’s Atomic Model
Bohr’s model for the hydrogen atom aimed to explain its electronic structure and justify its atomic spectrum. It was based on three main postulates:
- The electron revolves around the nucleus in specific circular orbits of fixed energy.
- Only orbits where electrons possess specific, quantized energy values are allowed. These orbits are called energy levels.
- When an electron transitions from a higher energy level to a lower one, the energy difference is emitted as light (a photon).
Electron
Read MoreUnderstanding Workplace Grapevine Communication
The most vital element of an organization is its staff management technique. Grapevine is a tool available to management that can provide influence over employees without causing bitterness. It offers an alternative path for exchanging information without following the tedious formal communication paths. It is neither pre-planned nor deliberately initiated by management. It is not written but oral. Furthermore, it is not confined to a particular direction, but spreads like a grapevine. The formal
Read MoreKey Sampling Methods and Validity Concepts in Research
Essential Steps in the Research Sampling Process
Define the Population of Interest
A population is the entire group of people you want to draw conclusions about. For example, if Brooke wants to know how much stress college students experience during finals, her population is all college students.
Determine the Sampling Frame
A sampling frame is the specific group of individuals from which you will draw your sample. For example, Brooke might decide her sampling frame is every student at the university
Key Literary Devices and Figures of Speech Defined
Synecdoche
A figure of speech using a specific name, appellation, or nickname for the person or thing itself. E.g., ‘the Apostle’ for St. Paul; ‘a Nero’ for a cruel man.
Allegory
A narrative or description in which characters, places, and events represent abstract qualities or ideas. Example: The blindfold and wings of Cupid are allegorical.
Hyperbole
A figure of speech involving exaggeration for emphasis or effect, increasing or decreasing what is spoken of.
Irony
A rhetorical figure expressing the opposite
Read MoreUnderstanding Human Reproductive Processes and Health
FUNCTION.REPRO – GAMETOGENESIS: Gametes are formed in gonads.
Fertilization
: Internal joining of two gametes forms the zygote.Embryo Development
: The zygote undergoes cell division until it becomes an embryo that continues developing into a fetus.Childbirth
: The baby is born alive and fully formed.Development
: The baby grows and reaches maturity (adulthood).Changes at Sexual Maturity
– Primary Sex Characteristics:Puberty
: For people to reproduce, organs must mature (ages of 10 to 16).Sex Hormones
:Herbert Simon: Organizational Decision-Making
Herbert Simon’s Organization Theory (1950-1960)
Herbert Simon emphasized the integration of formal and informal efforts within organizations. His work aimed to develop more realistic models of human behavior in administrative settings.
The Administrative Behavior (1946)
Simon’s early work, often referred to as “Administrative Behavior” (published 1947), focused on changes in organizational structure and operational management. It was based on more realistic models of human decision-making. Key concepts
Read MoreHuman Figure Drawings: Symbolic Interpretations
1. Head: Intellect and Imagination
Represents the center for imaginative and intellectual functions.
1a. Large Head
Indicates: Intellectualization, especially if large in relation to the body.
1b. Other Head Features
- Disaffected Expression: Lack of emotional display.
- No Body / Portrait Frame: Figure framed like a portrait, or body omitted, suggesting detachment or focus on intellect.
- Emphasized Head (Piccolo): Highlights the significance of intellectual aspects.
- Isolation (Piccolo): May suggest withdrawal