In , an element is a pure substance consisting only of  that all have the same numbers of  in their . Unlike , chemical elements cannot be broken down into simpler substances by chemical means. The number of protons in the nucleus is the defining property of an element, and is referred to as its  (represented by the symbol Z) – all atoms with the same atomic number are atoms of the same element. All of the   of the universe is composed of chemical elements. When different elements undergo , atoms are rearranged into new  held together by . Only a minority of elements, such as  and , are found uncombined as relatively pure . Nearly all other naturally-occurring elements occur in the Earth as compounds or .  is primarily a mixture of the elements , , and , though it does contain compounds including  and .

On January 18, 1778, the English explorer Captain James Cook becomes the first European to discover the Hawaiian Islands when he sails past the island of Oahu.
 

Rubidium is the chemical element with the symbol Rb and atomic number 37. Rubidium is a very soft, silvery-white metal in the alkali metal group. Rubidium metal shares similarities to potassium metal and caesium metal in physical appearance, softness and conductivity.[6] Rubidium cannot be stored under atmospheric oxygen, as a highly exothermic reaction will ensue, sometimes even resulting in the metal catching fire.[7]

Rubidium is the first alkali metal in the group to have a density higher than water, so it sinks, unlike the metals above it in the group. Rubidium has a standard atomic weight of 85.4678. On Earth, natural rubidium comprises two isotopes: 72% is a stable isotope 85Rb, and 28% is slightly radioactive 87Rb, with a half-life of 49 billion years—more than three times as long as the estimated age of the universe.

German chemists Robert Bunsen and Gustav Kirchhoff discovered rubidium in 1861 by the newly developed technique, flame spectroscopy. The name comes from the Latin word rubidus, meaning deep red, the color of its emission spectrum. Rubidium's compounds have various chemical and electronic applications. Rubidium metal is easily vaporized and has a convenient spectral absorption range, making it a frequent target for laser manipulation of atoms. Rubidium is not a known nutrient for any living organisms. However, rubidium ions have similar properties and the same charge as potassium ions, and are actively taken up and treated by animal cells in similar ways.

Hello world!

These potato pancakes known as Reibekuchen in Germany are savory, sweet and addictive!

They are super popular during the Christmas market season and also come to town with the annual funfair.

Enjoy the recipe and our show on Youtube! Join us in our mission to cook meals from EVERY country on earth!

LIST OF INGREDIENTS

- peeled potatoes [500 g / 17 oz]

- apple puree [100 g / 3.2 oz]

- half onion

- nutmeg [1/8 tsp]

- salt & pepper

- vegetable oil to (deepish) fry

Servings: 2

Energy per serving: 462kcal / 1933kJ

Macronutrients: 27 g fat, 55 g carbs, 5 g protein

INSTRUCTIONS

1. ⁠Peel and grate the potatoes into a bowl
2. ⁠Drain the potatoes juice into a separate bowl, don't throw it away
3. ⁠After a few minutes, the starch should deposit on the bottom of the potato-juice: pour the juice away and mix the starch into the bowl of grated potatoes
4. ⁠Grate the onions on finest blade on top
5. ⁠Season with salt & pepper and add ground nutmeg
6. ⁠Heat up some vegetable oil, enough to cover pancakes of 1 cm height
7. ⁠Once the oil's temperature is at 130°C/266°F, reduce the stove's flame to low in order for the oil to not get much hotter and put a ladle of the grated potato-mix into the oil
8. ⁠Form the pancakes by gently pressing and let fry for 7-8 minutes, until the corners turn golden/brown
9. ⁠Turn upside down and fry for another 7-8 minutes
10. ⁠Take pancakes out of the oil-bath and place on a plate covered with paper kitchen towel to get rid of some of the oil
11. ⁠Serve with apple sauce/puree and enjoy!

Bon appétit!

#UnitedCuisines

Almost all of it lies in Asia, but a small portion extends into Europe. Istanbul, the largest city of Turkey and best-known example. The Bosporus Strait separates its European and Asian portions.
 

Rubidium is the chemical element with the symbol Rb and atomic number 37. Rubidium is a very soft, silvery-white metal in the alkali metal group. Rubidium metal shares similarities to potassium metal and caesium metal in physical appearance, softness and conductivity.[6] Rubidium cannot be stored under atmospheric oxygen, as a highly exothermic reaction will ensue, sometimes even resulting in the metal catching fire.[7]

Rubidium is the first alkali metal in the group to have a density higher than water, so it sinks, unlike the metals above it in the group. Rubidium has a standard atomic weight of 85.4678. On Earth, natural rubidium comprises two isotopes: 72% is a stable isotope 85Rb, and 28% is slightly radioactive 87Rb, with a half-life of 49 billion years—more than three times as long as the estimated age of the universe.

German chemists Robert Bunsen and Gustav Kirchhoff discovered rubidium in 1861 by the newly developed technique, flame spectroscopy. The name comes from the Latin word rubidus, meaning deep red, the color of its emission spectrum. Rubidium's compounds have various chemical and electronic applications. Rubidium metal is easily vaporized and has a convenient spectral absorption range, making it a frequent target for laser manipulation of atoms. Rubidium is not a known nutrient for any living organisms. However, rubidium ions have similar properties and the same charge as potassium ions, and are actively taken up and treated by animal cells in similar ways.

B550 Asus Tuf MB
16 gb ram
750 W psu
3700x
250 gb ssd
2 tb hdd
MSI 111m case
Hopefully a 3070 ti fits in here asap

Of the 94 naturally occurring elements, those with atomic numbers 1 through 82 each have at least one  (except for , element 43 and , element 61, which have no stable isotopes). Isotopes considered stable are those for which no radioactive decay has yet been observed. Elements with atomic numbers 83 through 94 are  to the point that radioactive decay of all isotopes can be detected. Some of these elements, notably  (atomic number 83),  (atomic number 90), and  (atomic number 92), have one or more isotopes with half-lives long enough to survive as remnants of the explosive  that produced the  before the formation of our . At over 1.9×10¹⁹ years, over a billion times longer than the current estimated age of the universe,  (atomic number 83) has the longest known alpha decay half-life of any naturally occurring element, and is almost always considered on par with the 80 stable elements. The very heaviest elements (those beyond plutonium, element 94) undergo radioactive decay with  so short that they are not found in nature and must be .

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There are now 118 known elements. In this context, "known" means observed well enough, even from just a few decay products, to have been differentiated from other elements. Most recently, the synthesis of element 118 (since named ) was reported in October 2006, and the synthesis of element 117 () was reported in April 2010. Of these 118 elements, 94 occur naturally on Earth. Six of these occur in extreme trace quantities: , atomic number 43; , number 61; , number 85; , number 87; , number 93; and , number 94. These 94 elements have been detected in the universe at large, in the spectra of stars and also supernovae, where short-lived radioactive elements are newly being made. The first 94 elements have been detected directly on Earth as  present from the formation of the solar system, or as naturally occurring fission or transmutation products of uranium and thorium.
 

salt and pepper

B550 Asus Tuf MB
16 gb ram
750 W psu
3700x
250 gb ssd
2 tb hdd
MSI 111m case
Hopefully a 3070 ti fits in here asap

Niobium, also known as columbium, is a chemical element with the symbol Nb (formerly Cb) and atomic number 41. Niobium is a light grey, crystalline, and ductile transition metal. Pure niobium has a Mohs hardness rating similar to that of pure titanium,[2] and it has similar ductility to iron. Niobium oxidizes in the earth's atmosphere very slowly, hence its application in jewelry as a hypoallergenic alternative to nickel. Niobium is often found in the minerals pyrochlore and columbite, hence the former name "columbium". Its name comes from Greek mythology, specifically Niobe, who was the daughter of Tantalus, the namesake of tantalum. The name reflects the great similarity between the two elements in their physical and chemical properties, making them difficult to distinguish.[3]

The English chemist Charles Hatchett reported a new element similar to tantalum in 1801 and named it columbium. In 1809, the English chemist William Hyde Wollaston wrongly concluded that tantalum and columbium were identical. The German chemist Heinrich Rose determined in 1846 that tantalum ores contain a second element, which he named niobium. In 1864 and 1865, a series of scientific findings clarified that niobium and columbium were the same element (as distinguished from tantalum), and for a century both names were used interchangeably. Niobium was officially adopted as the name of the element in 1949, but the name columbium remains in current use in metallurgy in the United States.

It was not until the early 20th century that niobium was first used commercially. Brazil is the leading producer of niobium and ferroniobium, an alloy of 60–70% niobium with iron. Niobium is used mostly in alloys, the largest part in special steel such as that used in gas pipelines. Although these alloys contain a maximum of 0.1%, the small percentage of niobium enhances the strength of the steel. The temperature stability of niobium-containing superalloys is important for its use in jet and rocket engines.

Niobium is used in various superconducting materials. These superconducting alloys, also containing titanium and tin, are widely used in the superconducting magnets of MRI scanners. Other applications of niobium include welding, nuclear industries, electronics, optics, numismatics, and jewelry. In the last two applications, the low toxicity and iridescence produced by anodization are highly desired properties. Niobium is considered a technology-critical element.

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