# What is a section drawing?

## What is a section drawing?

A 'section drawing', 'section' or 'sectional drawing' shows a view of a structure as though it had been sliced in half or cut along another imaginary plane. ... Plan drawings are in fact a type of section, but they cut through the building on a horizontal rather than vertical plane.

## What is cross section plan?

A cross section, also simply called a section, represents a vertical plane cut through the object, in the same way as a floor plan is a horizontal section viewed from the top. ... A sectional elevation is a combination of a cross section, with elevations of other parts of the building seen beyond the section plane.

## What is cross section drawing?

In technical drawing a cross-section, being a projection of an object onto a plane that intersects it, is a common tool used to depict the internal arrangement of a 3-dimensional object in two dimensions.

## What is area of cross section?

The cross-sectional area is the area of a two-dimensional shape that is obtained when a three-dimensional object - such as a cylinder - is sliced perpendicular to some specified axis at a point. ... For example, the cross-section of a cylinder - when sliced parallel to its base - is a circle.

## What is total cross section?

When a cross section is integrated over all scattering angles (and possibly other variables), it is called a total cross section or integrated total cross section. ... Thus, specifying the cross section for a given reaction is a proxy for stating the probability that a given scattering process will occur.

## How do you calculate a cross section?

Cross-Sectional Area of a Rectangular Solid The volume of any rectangular solid, including a cube, is the area of its base (length times width) multiplied by its height: V = l × w × h. Therefore, if a cross section is parallel to the top or bottom of the solid, the area of the cross-section is l × w.

## What is scattering angle?

Scattering angle is the angle at which a light beam is deflected by a particle when it comes in contact with it.

## What is difference between scattering and reflection?

Scattering requires a total absorption and emission of a particle or a photon, whereas reflection only bounces back the incident particle or wave. The wavelength of the incident wave can change due to scattering, but it cannot change due to reflection.

## What is scattering effect?

Scattering of light is the phenomenon in which light rays get deviated from its straight path on striking an obstacle like dust or gas molecules, water vapours etc. Scattering of light gives rise to many spectacular phenomena such as Tyndall effect and the “red hues of sunrise and sunset”.

## Is scattering a type of reflection?

Reflections of radiation that undergo scattering are often called diffuse reflections and unscattered reflections are called specular (mirror-like) reflections. Originally, the term was confined to light scattering (going back at least as far as Isaac Newton in the 17th century).

## What is scattering and reflection?

When light hits the pieces, the light bounces and reflects in a thousand different directions. The light in this case is scattered - it is reflecting off pieces but the light is not going in the same direction, instead it scatters in different directions.

## What is the angle of reflection?

: the angle between a reflected ray and the normal drawn at the point of incidence to a reflecting surface.

## What is the rule of reflection?

The normal line divides the angle between the incident ray and the reflected ray into two equal angles. ... The law of reflection states that when a ray of light reflects off a surface, the angle of incidence is equal to the angle of reflection.

## What are the 2 laws of reflection?

Laws of reflection are: (i) The incident ray, the reflected ray and the normal ray at the point of incidence, lie in the same plane. (ii) The angle of incidence is equal to the angle of reflection. Want to top your physics exam ?

## What is first law of reflection?

First law of reflection: According to the first law, the incident ray, reflected ray and normal, all lie in the same plane. Second law of reflection: According to the second law, the angle of reflection is always equal to the angle of incidence. ... This ray of light will be reflected back along the same path.

## What are the types of reflection?

The reflection of light can be roughly categorized into two types of reflection. Specular reflection is defined as light reflected from a smooth surface at a definite angle, whereas diffuse reflection is produced by rough surfaces that tend to reflect light in all directions (as illustrated in Figure 3).