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Light art is a form of visual art where main media of expression is light. Light has been used for architectural aesthetical effects throughout human history. However, the modern concept of light art emerged with the development of artificial light sources and experimenting modern art. One of the first artistic uses of light is the way in which stained glass can be used to color transmitted light, examples of this goes back to the 4th century...

Dolphins are marine mammals that are closely related to whales and porpoises. There are almost forty species of dolphin in seventeen genera. They vary in size from 1.2 m (4 ft) and 40 kg (90 lb) (Maui's Dolphin), up to 9.5 m (30 ft) and 10 tonnes (9.8 LT; 11 ST) (the Orca or Killer Whale). They are found worldwide, mostly in the shallower seas of the continental shelves, and are carnivores, mostly eating fish and squid...

Insects (from Latin insectum, a calque of Greek ἔντομον, "cut into sections") are a class of living creatures within the arthropods that have a chitinous exoskeleton, a three-part body (head, thorax, and abdomen), three pairs of jointed legs, compound eyes, and two antennae. They are among the most diverse group of animals on the planet and include more than a million described species and represent more than half of all known living organisms...

Fashion, a general term for the style and custom prevalent at a given time, in its most common usage refers to costume or clothing style. The more technical term, costume, has become so linked in the public eye with the term "fashion" that the more general term "costume" has in popular use mostly been relegated to special senses like fancy dress or masquerade wear, while the term "fashion" means clothing generally, and the study of it...

A surgical instrument is a specially designed tool or device for performing specific actions of carrying out desired effects during a surgery or operation, such as modifying biological tissue, or to provide access for viewing it. Over time, many different kinds of surgical instruments and tools have been invented. Some surgical instruments are designed for general use in surgery, while others are designed for a specific procedure or surgery...