Background Research

Big picture:

Light Pinhole Camera

Electromagnetic radiation Exposure time

Photons Dark room

Developer Fixer

Red light

Principle or/and concepts:

A pinhole camera is a simple device in form of a dark chamber. It takes images using the rectilinear propagation of light, which is the fact that light travels in a straight line. In other words, it lets light paint an image on paper or film.

Light is a form of electromagnetic radiation which enables us to see objects. Photons are particles of light.

Exposure time is the time is the time needed for enough light to fill a camera in order for the film paper attached inside the pinhole camera to be exposed.

A dark room is a room that lacks all light except for safe lights (red lights) in which photographers use to produce and print images.

A developer is a chemical that converts the silver ions in photographic paper to silver. This allows the image to come forth on the paper.

A fixer is something that causes the chemical reaction of the developer and photographic paper to stay so that the image can be saved for a longer time.

Red light (or safelights) is a wavelength of light that the photographic paper and film are not sensitive to. It lets photographers see what they are doing when developing images.

Keywords and units:

Seconds will be used to measure exposure time and centimeters will be used to measure the dimensions and measurements for the box and such. To measure the materials, grams, liters, and teaspoons will be used.

As well as this, other keywords that will be used often include light, image, dark, develop, pinhole, exposure, and

Figures:

The formula used for calculating distance (d) needed to capture an image of a specific object is i/f=o/d. In this case, i represents the height/width of the photo paper, f represents the focal length (from the paper to pinhole) , and o represents the height/width of the subject.

CITATIONS:

Balihar, D. (2001). WHAT IS A PINHOLE CAMERA? Retrieved November 13, 2016, from http://www.pinhole.cz/en/index.php

"Light." Science of Everyday Things. . Retrieved November 12, 2016 from Encyclopedia.com: http://www.encyclopedia.com/science/news-wires-white-papers-and-books/light

Adams, A. (2016). History of Photography. Retrieved November 13, 2016, from https://www.britannica.com/technology/photography