Light and Pinhole Camera Basics

A set of flashcards covering the properties of light, types of light sources, and the setup of a pinhole camera experiment.

Under what condition can an object be seen?

An object can be seen when light reflects off it and bounces into our eyes.

What is the term for objects that give out their own light?

Luminous

What are the three examples of Luminous sources mentioned in the notes?

1. Sun, 2. Candle, 3. Light bulb

What are objects called that do not give out their own light and instead reflect it?

Non-Luminous

What are the three examples of non-luminous objects provided in the text?

1. moon, 2. Table, 3. Disco ball

How does light travel according to the transcript?

Light travels in Straight lines.

What are three examples provided that demonstrate light travelling in straight lines?

1. light rays travelling through the trees, 2. Shadows, 3. laser

What specific item is used to make a small hole in the black paper for the pinhole camera experiment?

Optical pin

What type of lamp is listed in the apparatus for the pinhole camera experiment?

Carbon filament lamp

According to Experiment 1, how far should you stand from the lamp when pointing the camera?

About $1\,m$ away

On what part of the pinhole camera should the image of the lamp be visible?

The greaseproof paper screen