Notes, summaries, assignments, exams, and problems for Physics

Sign Convention for Reflection by Spherical Mirrors

1. The object is always placed on the left of the mirror.
2. All distances parallel to the principal axis are measured from the pole of the mirror.
3. Distances measured perpendicular to and above the principal axis are taken as positive.
4. Distances measured perpendicular to and below the principal axis are taken as negative.
5. The focal length of a concave mirror is negative.

Image Formation by a Concave Lens

1. If the object is at infinity, the image is formed at the focus of the lens on the same side of the lens as the object. It is virtual, erect, and highly diminished.
2. If the object is at any finite distance from the lens, the image is formed on the same side of the lens as the object and between the focus

The romanticism was the movement during the 19^th Century.

This period was focused in the representation of the self, the philosophy represented in society and the mind as the main source of thinking.

Poetry was the maxim exponent of Romanticism, it represented Literature. Poets considered themselves as leaders that helped to understand society. The poet taught, guided and lead the rest to the truth. They teach them how the world works.

Each poet interpreted Romanticism in his own way; the romantic elements were observed and discussed in different points of view. All of them structured their “romanticism”.

There were two generations of romantic poets. The first generation composed by W. Wordsworth and Coleridge (which is the main interest in... Continue reading "The Romanticism Movement: Poetry, Language, and Society" »

Angular Momentum Conservation

The law of conservation of angular momentum states that when no external torque acts on an object, its angular momentum remains constant.

Inverse Square Law

The inverse-square law dictates that a physical quantity's intensity is inversely proportional to the square of the distance from its source.

Energy Conservation

The law of conservation of energy states that energy cannot be created or destroyed, only transformed or transferred.

Momentum Conservation

In an isolated system, the total momentum of two objects before a collision equals their total momentum after the collision.

Energy Degradation

The first law of thermodynamics asserts that the universe's total energy is constant. The second law states that this energy's... Continue reading "Fundamental Physics Laws: Momentum, Energy, and Motion" »

mww27-narrative texnique:

Verbal economy and precision supplemented with a psychology of impersonality - uses a classical style to redeem the fragmentation, loss of value, and chaos from the war. He uses writing to produce clarity, simplicity, and strength of statement and expression, learned from his journalistic practice.

• Clean and hard prose, with simple declarative sentences built on nouns without adverbial or descriptive excess.
• Mostly coordination, rarely subordination.
• Style emphasized dialogue and vivid description.
• Eyipsis, stripping away any excess.

TWL22

The whole point of the poem is to show the meaninglessness of modern culture.

• This poem shares many characteristics with the cantos.
• It's not an imagist poem because it has 5 sections.
• The

Simple Microscope

A simple microscope, commonly used by watch repairers, allows for the observation of minute details by magnifying an object placed within its focal length. The convex lens of the microscope produces an erect image on the same side of the lens as the object. By adjusting the distance between the object and the lens, the image can be obtained at the distance of distinct vision, enabling clear observation without straining the eyes.

Dispersion of Light

The phenomenon of splitting light into its component colors is known as dispersion of light. The band of colored components of a light beam is called a spectrum. The different colors of light in the spectrum of white light are violet, indigo, blue, green, yellow, orange, and red.

Ozone

WEEK4

Gauss's Law in Electromagnetism

For a closed surface represented by i, the number of electric field lines leaving the surface is equal to the number of lines entering it. This is consistent with the fact that no net charge is enclosed by the surface. However, for the closed surface ii in the same figure, there is a net outward flux, indicating a net positive charge enclosed.

The situation is radically different for magnetic fields, which are continuous and form closed loops. Examine the Gaussian surfaces represented by i or ii. Both cases visually demonstrate that the number of magnetic field lines leaving the surface is balanced by the number of lines entering it. The net magnetic flux is zero for both surfaces. This is true for any closed surface.... Continue reading "Electromagnetic Principles: Flux, Induction, and AC Power Generation" »