Shadowgram is a term used in photography, referring to an image produced by passing light through an object and then onto a screen or photographic paper. The word is made up of two parts: "shadow" and "gram", where "shadow" means an area without light caused by an opaque object, and "gram" is from the Greek word for "drawing" or "writing". The IPA phonetic transcription for shadowgram is ˈʃædəʊɡræm, with stress on the first syllable and two syllables for "gram".
A shadowgram is a term derived from the combination of the words "shadow" and "gram," referring to an image or representation created by projecting shadows onto a surface. It is a technique commonly used in various fields, including photography, radiology, and art. In photography, a shadowgram is produced by illuminating a subject from various angles, causing shadows to be cast on a background or surface. This technique allows for a visual depiction of the subject's three-dimensional qualities, enabling the photographer to capture and convey depth, texture, and form.
In the field of radiology, a shadowgram is generated by obtaining X-ray images of an object or a human body part. Using X-ray technology, different densities within the subject are detected, resulting in the formation of a detailed shadowgram. This helps medical professionals examine and diagnose potential abnormalities or issues within the subject.
Furthermore, in artistic contexts, a shadowgram is created by using light and shadow to capture silhouettes or outlines of objects or figures. Artists may employ various techniques, such as backlighting, to create intricate shadowgrams that offer a visually striking representation of the subject's shape and contours.
Overall, a shadowgram encompasses the visual representation formed by casting shadows onto a surface, serving as a tool for analysis, artistic expression, or diagnostic purposes, depending on the field of application.
Skiagram.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "shadowgram" is a combination of two separate words: "shadow" and "gram".
The term "shadow" originated from Middle English and is derived from the Old English word "sceaduwe", which ultimately comes from the Proto-Germanic word "skadwaz". The word "shadow" refers to a dark area or shape produced by an object blocking the light, often cast on a surface.
The second part of the word, "gram" is derived from the Greek word "gramma", meaning "something written or drawn". It later entered Latin as "gramma", referring to a letter or character, and developed into the Old English word "gram", which meant "letter" or "mark". Over time, "gram" evolved to be used as a short form for words related to graphics or images, such as "photogram" and "telegram".