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Pronunciation. pɪˈtiːkɪə. Specialty. Rheumatology. A petechia ( / pɪˈtiːkiə /; [ 1] pl.: petechiae) is a small red or purple spot (≤4 mm in diameter) that can appear on the skin, conjunctiva, retina, and mucous membranes which is caused by haemorrhage of capillaries. [ 2][ 3] The word is derived from Italian petecchia ' freckle ', of ...
Color vision. Colorless, green, and red photographic filters as imaged by camera. Color vision, a feature of visual perception, is an ability to perceive differences between light composed of different frequencies independently of light intensity. Color perception is a part of the larger visual system and is mediated by a complex process ...
Purple is one of the least used colors in vexillology and heraldry. Currently, the color appears in only four national flags: that of Dominica, Spain, El Salvador, and Nicaragua, and one co-official national flag, the Wiphala (co-official national flag of Bolivia ). However, it is also present in the flags of several administrative subdivisions ...
If you disable Enhanced Contacts, any info that was previously saved from your contact's emails will be removed. 1. Click the Settings icon | select More Settings . 2. Click Contacts. 3. Click Disable next to Enhance Contacts. 4. Alternatively, click Enable if you change your mind.
Specialty. Dermatology, hematology. Purpura ( / ˈpɜːrpjʊərə / [ 1]) is a condition of red or purple discolored spots on the skin that do not blanch on applying pressure. The spots are caused by bleeding underneath the skin secondary to platelet disorders, vascular disorders, coagulation disorders, or other causes. [ 2]
Spotlight operator. The spotlight operator or followspot operator is a theatrical technician who operates a specialized stage lighting instrument known as a followspot. A followspot is any lighting instrument manually controlled by an operator during a performance. Generally a followspot will be a dedicated, large lighting instrument designed ...
Yes! You can take your email on the go with an iOS & Android app.
In photography (particularly digital photography ), purple fringing (sometimes called PF) is the term for an unfocused purple or magenta "ghost" image on a photograph. This optical aberration is generally most visible as a coloring and lightening of dark edges adjacent to bright areas of broad- spectrum illumination, such as daylight or various ...