Table of Contents
What is secondary lighting?
1. A light source which is not self-luminous but receives light and redirects it as by reflection or transmission. 2. The second most important, or most obvious, source of light when several sources are present.
What is the primary light?
Red, green, and blue are the primary colors of light—they can be combined in different proportions to make all other colors. For example, red light and green light added together are seen as yellow light.
Is a torch a primary light source?
Light comes from different sources called light sources; our main natural light source is the sun. Other sources include fire, stars and man-made light sources such as light-bulbs and torches.
What is primary sources and secondary sources in history?
A primary source gives you direct access to the subject of your research. Secondary sources provide second-hand information and commentary from other researchers. Examples include journal articles, reviews, and academic books. A secondary source describes, interprets, or synthesizes primary sources.
What are the primary sources of Philippine history?
They include letters, diaries, journals, newspapers, photographs, and other immediate accounts. The interpretation and evaluation of these sources becomes the basis for research.
What is meant by coherent sources?
In physics, two wave sources are perfectly coherent if their frequency and waveform are identical and their phase difference is constant. Two waves are said to be coherent if they have a constant relative phase.
Which of the following is primary source of light?
The Sun
Is a TV a source of light?
A light source is anything that makes light, whether natural and artificial. Natural light sources include the Sun and stars. Artificial light sources include lamp posts and televisions.
What is secondary sources in Philippine history?
Secondary sources are written after the historical event they describe has occurred. These materials analyze primary sources and draw conclusions from them. Secondary sources provide hindsight, and usally incorporate multiple sources of information about the same event.