Water (H
2O) is the most abundant compound on Earth's surface, covering 70 percent of the planet. In nature, water exists in liquid, solid, and gaseous states. It is in dynamic equilibrium between the liquid and gas states at standard temperature and pressure. At room temperature, it is a tasteless and odorless liquid, nearly colorless with a hint of blue. Many substances dissolve in water and it is commonly referred to as the universal solvent. Because of this, water in nature and in use is rarely pure and some properties may vary from those of the pure substance. However, there are also many compounds that are essentially, if not completely, insoluble in water. Water is the only common substance found naturally in all three common states of matter and it is essential for all life on Earth. Water makes up 55% to 78% of the human body.
H2O is the chemical formula for water, ice or steam.
H2O or H2O may also refer to:
H2O is open-source software for big-data analysis. It is produced by the start-up H2O.ai (formerly 0xdata), which launched in 2011 in Silicon Valley. The speed and flexibility of H2O allow users to fit hundreds or thousands of potential models as part of discovering patterns in data. With H2O, users can throw models at data to find usable information, allowing H2O to discover patterns. Using H2O, Cisco estimates each month 20 thousand models of its customers' propensities to buy.
H2O's mathematical core is developed with the leadership of Arno Candel; after H2O was rated as the best "open-source Java machine learning project" by GitHub's programming members, Candel was named to the first class of "Big Data All Stars" by Fortune in 2014. The firm's scientific advisors are experts on statistical learning theory and mathematical optimization.
The H2O software runs can be called from the statistical package R and other environments. It is used for exploring and analyzing datasets held in cloud computing systems and in the Apache Hadoop Distributed File System as well as in the conventional operating-systems Linux, Mac OS, and Microsoft Windows. The H2O software is written in Java, Python, and R. Its graphical-user interface is compatible with four popular browsers: Chrome, Safari, Firefox, and Internet Explorer.
Curses on thee, cruel iron
Curses on the steel thou givest
Curses on thee, tongue of evil
Cursed be thy life forever!
Once thou wert of little value
Having neither form nor beauty
Neither strength noe great importance
When in form of milk thou rested
When for ages thou wert hidden
In the breasts of gods' three daughters
Hidden in their heaving bosoms
On the borders of the cloudlets
In the blue vault of the heavens
Thou wert once of little value
Having neither form nor beauty
Neither strength nor great importance
When like water thou wert resting
On the broad back of the marshes
On the steep declines of mountains
When thou wert but formless matter
Only dust of rusty color
Curses on thee, cruel iron
Curses on the steel thou givest
Curses on thee, tongue of evil
Cursed be thy life forever!
Surely thou wert void of greatness
Having neither strength nor beauty
When the moose was trampling on thee
When the roebuck trod upon thee
When the tracks of wolves were in thee
And the bear-paws scratched thy body
Surely thou hadst little value
When the skillful Ilmarinen
First of all the iron-workers
Brought thee from the blackened swamp-lands
Took thee to his ancient smithy
Placed thee in his fiery furnace
Truly thou hadst little vigor
Little strength, and little danger
When thou in the fire wert hissing
Rolling forth like seething water
From the furnace of the smithy
When thou gavest oath the strongest
By the furnace, by the anvil
By the tongs, and by the hammer
By the dwelling of the blacksmith
By the fire within the furnace
Curses on thee, cruel iron
Curses on the steel thou givest
Curses on thee, tongue of evil
Cursed be thy life forever!
Now forsooth thou hast grown mighty
Thou canst rage in wildest fury
Thou hast broken all thy pledges
All thy solemn vows hast broken
Like the dogs thou shamest honor
Shamest both thyself and kindred
Tainted all with breath and evil
Tell who drove thee to this mischief
Tell who taught thee of thy malice
Tell who gavest thee thine evil!
Tell me! Now tell me!
Did thy father, or thy mother
Did the eldest of thy brothers
Did the youngest of thy sisters
Did the worst of all thy kindred
Not thy father, nor thy mother
Not the eldest of thy brothers
Not the youngest of thy sisters
Not the worst of all thy kindred
But thyself hast done this mischief
Thou the cause of all our trouble
Come and view thine evil doings
And amend this flood of damage
Curses on thee, cruel iron
Curses on the steel thou givest
Curses on thee, tongue of evil