The spelling of "direct illumination" can be challenging for non-native English speakers due to the various vowel sounds in both words. The word "direct" is spelled /dɪˈrɛkt/, with the stress on the second syllable and the "e" pronounced as a short "e" sound. "Illumination" is spelled /ɪˌluːmɪˈneɪʃən/, with the stress on the third syllable and a long "u" sound in the second syllable. Learning and practicing IPA phonetic transcription can help learners accurately spell words with complex sounds like "direct illumination."
Direct illumination refers to the process of lighting an object or a scene directly, without any interference or obstruction. It is a lighting technique that involves directing light rays straight onto the subject matter, resulting in a clear and focused illumination.
In the context of lighting design and photography, direct illumination typically involves using a single light source that is placed strategically to shine directly on the subject. This technique brings attention to specific details, highlights the shape, texture, and colors of the subject, and creates well-defined shadows.
In interior design and architecture, direct illumination refers to the use of lighting fixtures that emit light directly downwards or outwards, illuminating a specific area or object in a space. Examples of direct illumination fixtures include chandeliers, pendant lights, track lights, and spotlights. These fixtures often provide targeted lighting, emphasizing specific elements or adding brightness to a room.
Direct illumination is often used to create a dramatic effect, bring focus to a particular area or object, or highlight specific architectural features. It can also be used to provide functional and task lighting in areas where detail-oriented work is performed, such as reading or cooking areas.
Overall, direct illumination is a lighting technique that involves shining light directly onto a subject matter to achieve clarity, focus, and emphasis on specific details or areas.
The i. of an object under the microscope by light falling upon its upper surface.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "direct" comes from the Latin word "directus", meaning "straight" or "directed". "Illumination" comes from the Latin word "illuminare", which means "to light up" or "to illuminate". Therefore, the term "direct illumination" refers to the lighting technique where light is emitted directly from a source to the object being illuminated.