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  2. Tutorial (video games) - Wikipedia

    en.wikipedia.org/wiki/Tutorial_(video_games)

    Some critics believe that a good tutorial should necessarily allow the player to discover game mechanics for themselves without being told how to do them, as is the case with the original Metroid, [16] as well as Minecraft, [17] although the latter does have a set of tutorial worlds available on the Legacy Console Edition, varying based on the game version, that provide a more traditional ...

  3. Pickaxe - Wikipedia

    en.wikipedia.org/wiki/Pickaxe

    Pickaxes are commonly carried by Pioneer Sergeants in the British Army. [5] A normal pickaxe handle is made of ash or hickory wood and is about 3 ft (91 cm) and weighs about 2.5 lb (1.1 kg). British Army pickaxe handles must, by regulation, be exactly 3 ft (91 cm) long, for use in measuring in the field. [citation needed] New variant designs are:

  4. TETRA - Wikipedia

    en.wikipedia.org/wiki/TETRA

    TETRA was specifically designed for use by government agencies, emergency services, (police forces, fire departments, ambulance) for public safety networks, rail transport staff for train radios, transport services and the military. [3] TETRA is the European version of trunked radio, similar to Project 25.

  5. TETRAPOL - Wikipedia

    en.wikipedia.org/wiki/TETRAPOL

    TETRAPOL (short for Terrestrial Trunked Radio POLice) [citation needed] is a digital professional mobile radio standard, as defined by the Tetrapol Publicly Available Specification (PAS), used by professional user groups such as public safety, military, industry and transportation organizations throughout the world.

  6. Mattock - Wikipedia

    en.wikipedia.org/wiki/Mattock

    A mattock (/ ˈ m æ t ə k /) is a hand tool used for digging, prying, and chopping. Similar to the pickaxe, it has a long handle and a stout head which combines either a vertical axe blade with a horizontal adze (cutter mattock), or a pick and an adze (pick mattock).

  7. theRadBrad - Wikipedia

    en.wikipedia.org/wiki/TheRadBrad

    This article about an American entertainer is a stub. You can help Wikipedia by expanding it.

  8. Tetration - Wikipedia

    en.wikipedia.org/wiki/Tetration

    For example, in n z with z = i, tetration is achieved by using the principal branch of the natural logarithm; using Euler's formula we get the relation: i a + b i = e 1 2 π i ( a + b i ) = e − 1 2 π b ( cos ⁡ π a 2 + i sin ⁡ π a 2 ) {\displaystyle i^{a+bi}=e^{{\frac {1}{2}}{\pi i}(a+bi)}=e^{-{\frac {1}{2}}{\pi b}}\left(\cos {\frac ...

  9. Tetrahedron packing - Wikipedia

    en.wikipedia.org/wiki/Tetrahedron_packing

    Tetrahedral packaging. Aristotle claimed that tetrahedra could fill space completely. [4] [5]In 2006, Conway and Torquato showed that a packing fraction about 72% can be obtained by constructing a non-Bravais lattice packing of tetrahedra (with multiple particles with generally different orientations per repeating unit), and thus they showed that the best tetrahedron packing cannot be a ...