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Inverse spinel structures have a different cation distribution in that all of the A cations and half of the B cations occupy octahedral sites, while the other half of the B cations occupy tetrahedral sites. An example of an inverse spinel is Fe 3 O 4, if the Fe 2+ (A 2+) ions are d 6 high-spin and the Fe 3+ (B 3+) ions are d 5 high-spin.
In this diagram, the red team is executing a neutral zone trap resulting in the blue team dumping the puck in. The neutral zone trap (often referred to as simply the trap) is a defensive strategy used in ice hockey to prevent an opposing team from proceeding through the neutral zone (the area between the blue lines) and to force turnovers.
Also trapper or catching glove. The webbed glove that the goaltender wears on the hand opposite the hand that holds the stick. centre Also center. A forward position whose primary zone of play is the middle of the ice. change on the fly Substituting a player from the bench during live play, i.e. not during a stoppage prior to a faceoff. charging The act of taking more than three strides or ...
In the offensive zone, the defence skaters usually "play the blue line". It is their duty to keep the puck in the offensive zone by stopping it from crossing the blue line that demarcates where the offensive zone begins. Should the puck cross this line, the offence cannot touch the puck in their opponent's zone without stopping play (see ...
Teams were allowed a forward pass in any of the zones, but the puck must be carried over a blue line by a skater. [10] Frank Boucher and Cecil Duncan introduced the centre red line in the 1943–44 season, in an effort to open up the game by reducing the number of offside infractions and create excitement with quicker counter-attacks. [11]
The point's responsibilities include attempting to keep the puck in the offensive zone when the defensive team attempts to clear (see also Offside (ice hockey)), receiving a pass from the forwards to allow the play to reset, and taking slapshots at the goal, hoping to score, create a rebound or a deflection. On the power play, one of the ...
The National Hockey League rules are the rules governing the play of the National Hockey League (NHL), a professional ice hockey organization. Infractions of the rules, such as offside and icing , lead to a stoppage of play and subsequent face-offs , while more serious infractions lead to penalties being assessed to the offending team.
Maghemite (Fe 2 O 3, γ-Fe 2 O 3) is a member of the family of iron oxides.It has the same formula as hematite, but the same spinel ferrite structure as magnetite (Fe 3 O 4) and is also ferrimagnetic.