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In infrared photography, the film or image sensor used is sensitive to infrared light. The part of the spectrum used is referred to as near-infrared to distinguish it from far-infrared, which is the domain of thermal imaging. Wavelengths used for photography range from about 700 nm to about 900 nm. Usually an "infrared filter" is used; this lets infrared (IR) light pass through to the camera, but blocks all or most of the visible light spectrum (the filter thus looks black or deep red)...

When wild beasts that are considered heavyweights in the jungle turn on to each other, the sight is unlike any other. Imagine two adults elephants fighting each other on the earth must surely shake beneath! And imagine, what happens when two adult tigers or lions turn on to each other! The other animals in their vicinity must tremble with fear. Even eagles and polar bears can turn onto each other and the sight, though nasty, is unlike any other...

A giant dog breed is any of many dog breeds whose height and weight put them at the largest end of all dog breeds. There is no universal height or weight at which a breed is classified as a giant breed; any very large dogs fall into this category, although some groups define "giant breed" based on a certain height or weight, such as 100 pounds. Giant breeds grow rapidly, but take longer to mature into their full adult sizes than smaller dogs...

Woodworking is the process of building, making or carving something using wood. Wood is a hard, fibrous tissue found in many plants. It has been used for centuries for both fuel and as a construction material for several types of living areas such as houses. It is an organic material, a natural composite of cellulose fibers (which are strong in tension) embedded in a matrix of lignin which resists compression...