A geisha is a traditional Japanese entertainer whose skills include performing classical music and dance.
Many freshwater fishes are also popular as food.
The Vought F4U Corsair radial-engined naval fighter was one of the most prominent American aircraft of the Second World War.
This animation demonstrates the structure and operation of different types of optical disc drives.
Quetzalcoatlus was one of the largest known flying animals of all time.
This animation demonstrates the structure and operation of digital cameras.
A prehistoric flying reptile, similar to birds. However, there is no direct evolutionary link between the two.
A spacecraft on its path is in a constant state of free fall.
This animation demonstrates how muscles and vertebrae move the head.
The earliest version of the lute appeared in ancient Mesopotamia.
The naval battle fought by the British Navy against the German Navy was the largest sea battle in World War I.
This animation demonstrates the anatomy of tulips, daffodils and snowdrops.
Computer hard disk drives are devices of magnetic data storage.
Penguins are birds living in the Antarctic and adapted to cold temperature and swimming.
Marine mammals, the largest known animals to have ever existed.
Solomon's temple became one of the most important symbols of Jewish architecture.
Smoking severely damages the respiratory system, it may cause COPD or lung cancer.
The V-1 flying bomb was an early pulse-jet-powered cruise missile developed in Nazi Germany and deployed in WWII.
A ray of light is reflected or refracted at the boundary of two mediums with different refractive indices.
In ecology, a niche is a term describing the way of life of a species.