Natron is a naturally occurring mixture of sodium carbonate decahydrate (Na2CO3·10H2O, a kind of soda ash) and about 17% sodium bicarbonate (also called baking soda, NaHCO3) along with small quantities of sodium chloride and sodium sulfate. Natron is white to colourless when pure, varying to gray or yellow with impurities. Natron deposits are sometimes found in saline lake beds which arose in arid environments. Throughout history natron has had many practical applications which continue in the wide range of modern uses of its constituent mineral components.
In modern mineralogy the term natron has come to mean only the sodium carbonate decahydrate (hydrated soda ash) which makes up most of the historical salt.
The English word natron is a French cognate derived from the Spanish natrón through Greek νίτρον nitron. This derives from the Ancient Egyptian word nṯry 'natron'. Natron refers to Wadi El Natrun or Natron Valley in Egypt, from which natron was mined by the ancient Egyptians for use in burial rites. The modern chemical symbol for sodium, Na, is an abbreviation of that element's New Latin name natrium, which was derived from natron.
Natron is a free and open-source node-based compositing software. It has been influenced by digital compositing software such as Nuke, from which its user interface and many of its concepts are derived.
Natron supports plugins following the OpenFX 1.4 API. Most open-source and commercial OpenFX plug-ins are supported.
Natron is named after Lake Natron in Tanzania which, according to Natron lead programmer Alexandre Gauthier provides "natural visual effects" by preserving its dead animals.
Natron was started by Alexandre Gauthier in June 2012 as a personal project. The project was the winner of the 2013 Boost Your Code contest by Inria. The prize was a 12-month employment contract to develop Natron as a free and open-source software within the institute.
The first widely available public release was 0.92 (05.06.2014), which brought rotoscoping and chroma keying functionalities. Subsequent beta releases brought additional features such as motion blur, color management through OpenColorIO, and video tracking.
I turn to dust and fall with your tainted touch
And I feel my un-life is fading away
And your tainted love starts boiling my blood
A burning flamy attraction corrupting my soul
Forget your dreams on the shades of night
Drink all the tears that I shed as wine
Under my skin
Inside my mind
Ride with my blood as my secrets of life
Take my world
My winter nights
With hands of doom
Bring me darkness
As my un-life fades away.
Curse, with your demon touch
Make dark my sky
Obsession fills me
Erupting my scars
Shows me with that are full of sins
(And the) world wants me dead
Make me dead
Make dark my sky
Cursing me with demon touch