Vertical and horizontal in the context of Zenith angle

The zenith (UK: /ˈzɛnɪθ/, US: /ˈziː-/) is the imaginary point on the celestial sphere directly "above" a particular location. "Above" means in the vertical direction (plumb line) opposite to the gravity direction at that location (nadir). The zenith is the "highest" point on the celestial sphere. The direction opposite of the zenith is the nadir.

A broadsheet is the largest newspaper format and is characterized by long vertical pages, typically of 22.5 inches (57 cm) in height. Other common newspaper formats include the smaller Berliner and tabloid–compact formats.

Historically, the broadsheet format emerged in the 17th century as a means for printing musical and popular prints, and later became a medium for political activism through the reprinting of speeches. In Britain, the broadsheet newspaper developed in response to a 1712 tax on newspapers based on their page counts. Outside Britain, the broadsheet evolved for various reasons, including style and authority.

Sloped armour is armour that is oriented neither vertically nor horizontally. Such angled armour is typically mounted on tanks and other armoured fighting vehicles (AFVs), as well as naval vessels such as battleships and cruisers. Sloping an armour plate makes it more difficult to penetrate by anti-tank weapons, such as armour-piercing shells, kinetic energy penetrators and rockets, if they follow a more or less horizontal trajectory to their target, as is often the case. The improved protection is caused by three main effects.

Firstly, a projectile hitting a plate at an angle other than 90° has to move through a greater thickness of armour, compared to hitting the same plate at a right-angle. In the latter case only the plate thickness (the normal to the surface of the armour) must be pierced. Increasing the armour slope improves, for a given plate thickness, the level of protection at the point of impact by increasing the thickness measured in the horizontal plane, the angle of attack of the projectile. The protection of an area, instead of just a single point, is indicated by the average horizontal thickness, which is identical to the area density (in this case relative to the horizontal): the relative armour mass used to protect that area.

A vertiport (verti- is for vertical and port for harbour, analogous to airport) is a future, as yet rarely realised concept of a take-off and landing site for electrically powered aircraft taking off and landing vertically, eVTOL craft. It can be part of a vertihub if there is a large volume of air traffic. A vertiport is similar to a heliport or helipad.

A telnyashka (Russian: тельняшка, pronounced [tʲɪlʲˈnʲaʂkə]) or telnik (тельник) is a type of undershirt worn with military uniforms of the Russian Armed Forces. They traditionally feature blue and white horizontal stripes, and can come in varying thicknesses and may be sleeved or sleeveless. Other variations of telnyashka with different colour schemes have been adopted based on a unit's affiliation.

Telnyashkas originated in the Imperial Russian Navy and spread from the Soviet Navy to the other branches of the Soviet Armed Forces. They have become a cultural icon of both Russia and the Soviet Union, especially their militaries, and are widely featured in popular culture.