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GCSE Bitesize was launched in January 1998, covering seven subjects. For each subject, a one- or two-hour long TV programme would be broadcast overnight in the BBC Learning Zone block, and supporting material was available in books and on the BBC website. At the time, only around 9% of UK households had access to the internet at home.
the digit "ten" in hexadecimal [2] and other positional numeral systems with a radix of 11 or greater [3] the unit ampere for electric current in physics [4] the area of a figure [5] the mass number or nucleon number of an element in chemistry [6] the Helmholtz free energy of a closed thermodynamic system of constant pressure and temperature [7]
V – volume. var – variance of a random variable. vcs – vercosine function. (Also written as vercos.) ver – versine function. (Also written as vers, siv.) vercos – vercosine function. (Also written as vcs.) vers – versine function. (Also written as ver, siv.)
The characteristic reaction of fullerenes is electrophilic addition at 6,6-double bonds, which reduces angle strain by changing sp 2-hybridized carbons into sp 3-hybridized ones. The change in hybridized orbitals causes the bond angles to decrease from about 120° in the sp 2 orbitals to about 109.5° in the sp 3 orbitals. This decrease in bond ...
[3] The regular icosahedron can also be constructed starting from a regular octahedron. All triangular faces of a regular octahedron are breaking, twisting at a certain angle, and filling up with other equilateral triangles. This process is known as snub, and the regular icosahedron is also known as snub octahedron. [4]
The four finite volume manifolds with this geometry are: S 2 × S 1, the mapping torus of the antipode map of S 2, the connected sum of two copies of 3-dimensional projective space, and the product of S 1 with two-dimensional projective space. The first two are mapping tori of the identity map and antipode map of the 2-sphere, and are the only ...
When silver nitrate (AgNO 3) is added to a solution of potassium chloride (KCl) the precipitation of a white solid (AgCl) is observed. [5] [6] AgNO 3 + KCl → AgCl↓ + KNO 3. The ionic equation allows to write this reaction by detailing the dissociated ions present in aqueous solution. Ag + + NO − 3 + K + + Cl − → AgCl↓ + K + + NO − 3
A set of polygons in an Euler diagram This set equals the one depicted above since both have the very same elements.. In mathematics, a set is a collection of different [1] things; [2] [3] [4] these things are called elements or members of the set and are typically mathematical objects of any kind: numbers, symbols, points in space, lines, other geometrical shapes, variables, or even other ...