Dictionary > Observer

Observer

Definition
noun, plural: observers
(1) One (a person or a machine) that watches, monitors, takes notice, or measures
(2) (psychology) The investigator
Supplement
In scientific research, the observer may be active or passive. An active observer is one who participates directly while studying or observing a group of subjects. A passive observer is who is not participating but only watches a group of subject under study.
Related term(s):

Mentioned in:

  • Magnitude
  • Eclipse


    You will also like...

    Lotic community of algal species
    Lotic Communities & Algae

    Lotic communities have conditions that are rather harsh for typical plants. Thus, the diversity of plant species in loti..

    squirrel
    Animal Water Regulation

    Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..

    takahē
    Takahē (Porphyrio hochstetteri)

    Meet the colorful takahē, an extremely rare flightless bird. Find out more about its unique features and why they matte..

    New Zealand Flora & Fauna
    Ecology & Biodiversity: New Zealand Flora & Fauna

    New Zealand is known for its unique biodiversity, caused by its remarkable geography and geologic history. Breaking away..

    Lentic community
    Freshwater Communities & Lentic Waters

    Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..

    Cambial cells
    Plant Tissues

    Plant organs are comprised of tissues working together for a common function. The different types of plant tissues are m..