Voorbeelden van commutator

• Brushes sparking badly on commutator of dynamo—due to poor contact. 

• Q. Why should sandpaper be used to smooth commutator instead of emery cloth? 

• The first dynamos were constructed with two commutator bars. 

• There are fifteen sections in the commutator, and each coupling is connected to a section. 

• These vibrations are adjusted to a very narrow range, but are sufficient to close the contacts of a commutator which reverses the current at each semi-vibration of the pendulum. 

• Taken together, throwing away terms of high enough grade and the removal of terms with even l after summation removes a high proportion of commutators.

• It reduces the free invariants into products of d-triangles and commutator words.

• Each hole connected by nylon hydraulic tubing to a ' fluid commutator ', a manifold containing a rotatable, ported centre-body.

• We have already exploited skew symmetry of the commutator in the derivation and 'beautification' of our integration formulae.

• For high-order methods, a significant number of commutators must be computed if dexp-1 is computed using (2.46).

• It is difficult to formalize the last two steps, involving two or more commutators.

• So, one could say that stable commutator length and homogeneous quasi-morphisms are in duality.

• A special feature of this transducer is that the output is free from any noise induced from commutator friction.

• In general, the number of terms counted according to power is significantly smaller than similar enumeration by the number of commutators.

• An essential role is played by the commutator.

• For the nonabelian case we give a partial characterization of the group of free invariants in terms of 'characteristic' powers of triangles and commutator words.

• The degree to which the flows of two vector fields fail to commute is measured by the commutator of the two vector fields.

• Provided that d is small, typically we can obtain the commutator matrix and its exponential explicitly.

• In other words, the length function merely counts commutators.

• At present there is no theory that systematically reduces the number of commutators to minimum.