Hydrogen, H: white
Fluorine, F: green
Antimony, Sb: violet
Strongest acid – Fluoroantimonic acid
Strongest acid – Fluoroantimonic acid – Actually, it is a super acid that is a mixture of hydrofluoric acid (HF) and antimony pentafluoride (SbF5). It is a thousand trillion times stronger than concentrated sulfuric acid. Even short-term contact with the skin can result in serious injuries or death – just like inhaling its vapors. Fluoroantimonic acid is stored in special containers.
Our planet composition – What is inside the Earth?
Our planet composition – Crust, mantle and core. In this abbreviated way one could characterize three layers of Earth, which were created at the beginning of its existence.
- Lithosphere – Top layer of Earth, which is in direct interaction with other terrestrial spheres, such as the hydrosphere, atmosphere and biosphere.
- Crust – It consists of the oceanic and earth’s crust. The thickness of the earth’s reaches up to 70 kilometers. The oceanic is thinner and its thickness varies between five and ten kilometers.
- Conrad’s discontinuity – Horizontal surface of the discontinuity in the earth’s crust that forms the transition between the upper and lower layers. Its depth varies in different types of crust from 5 to 30 km.
- Mohorovićic’s discontinuity – A layer that geologically defines the passage of the earth’s crust and upper mantle. Occurs in 20-90 kilometers deep under continents, and 10-20 kilometers under the oceans.
- Earth’s mantle – Layer consisting of upper and lower mantle. The upper reaches the depth of 90 kilometers. The lower one is assigned a depth of 650 km to the Earth’s core, and therefore approximately 2,900 km.
- Repetti’s discontinuity – The area between the upper and the lower mantle.
- Gutenberg’s discontinuity – Part of the Earth’s envelope, which is assigned at depth of 2,900 kilometers. Below it is the core of the Earth.
- Core – Geosphere, located in the center of the Earth. It starts at depth of 2,900 kilometers below the surface and covers approximately 31% of the Earth’s mass, with iron and nickel being the largest part of it. The core is twice as heavy as the Earth’s mantle and consists of a semi-internal inner core, which, among other things, creates the Earth’s magnetic field.
Andre-Marie Ampere – Thoughtful and versatile scientist
Andre-Marie Ampere – (1775 – 1836) – The ancestor of electrodynamics did not go to primary school, his father taught him alone. Ampere sent his first scientific work to the Lyon Academy of Sciences (Academie de Lyon) at the age of 13! A quiet life and urgent studies were interrupted when his father was guillotined in 1793 for the Jacobin dictatorship. Eighteen-year-old Ampere has suffered this trauma. After the period of mourning, he returned to science and spiritual work. He was interested in mathematics and physics as well as in philosophy, botany, chemistry, as well as Latin, Italian and Greek.
Son Jean-Jacques Ampere (1800 – 1864) after his father’s death finished his work. Which was to classify the sciences –
Sketches from the philosophy of science, or an analytic representation of the general classification of all human knowledge
But his greatest merit is description of magnetism and subsequent establishment of the theory of electromagnetic phenomena as the basis of electrodynamics. He also created the first magnetic coil, which became the basis for the later telegraph.
At the age of 22, he began to teach mathematics in Lyon and later became a professor of chemistry and physics. For nineteen years he taught at the Polytechnique in Paris. During his lifetime he belonged to many scientific societies and he was also appreciated abroad. Unfortunately, his financial situation did not reflect merit. He often lacked money for experiments, which delayed his work.
He spent most of his life traveling, while on one of them in Marseilles, on June 10, 1836, he died. On the gravestone, according to his wishes, engraved: Tandem felix – Finally happy.
Oldest pictogram – Presentation of concept
Oldest pictogram – Presentation of concept with image – Archaeologists in Gobekli Tepe
in Turkey have found the oldest pictogram, the representation of the concept with the image.
On one of the obelisks they discovered the drawing of a human head in the wing of the vulture
and the headless human body under the stele. Around the body are birds and scorpions.
According to experts, this is a pictorial representation of a particular event. The drawing comes
from 12 thousands years.
Probably the scene is related to funeral rituals. At that time, people buried dead in open graves,
where they left them to devour predators and scavengers.
The locals believed that the soul of the deceased would then go to heaven. Imagery about
the funeral habits of the then Gobekli Tepe inhabitants, archaeologists gain first of all from
the findings of the oldest temple complex that served as a religious center for a larger region.