collision

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be on a collision course

Of a person, group, or object, to be on a certain path to conflict, collision, destruction, or ruin with someone or something else. The radical coalition is set to be on a collision course with the majority government this year. Little did the passengers know that their train was on a collision course with disaster.
See also: collision, course, on

on a collision course

Of a person, group, or object, on a certain path to conflict, collision, destruction, or ruin with someone or something else. The radical left-wing coalition is set to be on a collision course with the majority conservative government this January. Little did the passengers know that they were riding a train on a collision course with disaster.
See also: collision, course, on

on a collision course

adopting an approach that is certain to lead to conflict with another person or group.
This phrase is also used literally to mean ‘going in a direction that will lead to a violent crash with another moving object or person’.
See also: collision, course, on

be on a colˈlision course (with somebody/something)


1 be in a situation which is almost certain to cause a disagreement or dispute: I was on a collision course with my boss over the sales figures.
2 be moving in a direction in which it is likely that you will crash into somebody/something: The ship was on a collision course with a huge iceberg.
See also: collision, course, on
References in periodicals archive ?
1); the most abundant of these ions were isolated and their collisionally induced dissociation (CID) product ions spectra were obtained.
The following parameters were used: nebulizer gas, 13 L/min; curtain gas, 12 L/min; ion spray voltage, -4,500 V; desolvation temperature, 450[degrees]C; collisionally activated dissociation gas, 8 L/min; declustering potential, -12 V; focusing potential, -180 V; entrance potential, -8 V; collision energy, -45 V; and collision cell exit potential, -51 V.
Normally the OIII emission comes from collisionally excited lines of oxygen and the reasons for no OIII emission in this case could be either a low temperature central star that is not emitting enough high energy photons to excite the nebula, or a high density nebula where the energy levels that produce the OIII lines are getting collisionally de-excited before they have a chance to emit the photons, a process called damping.
The Japan Aero space Exploration Agency's (JAXA) Hayabusa spacecraft revealed this near-Earth asteroid to be a classic example of a rubble pile, an aggregate of collisionally disrupted blocks of rock barely held together by gravity (S&T: September 2006, page 34).
Researchers can now conduct rapid, alternating collisionally induced dissociation (CID) and ETD scanning throughout the LC-MSn analysis of complex samples.
"Collisionally induced cohesion is one process by which small particles may coagulate and large particles may grow in size," the researchers suggest.
A second set of emission lines was used to estimate abundances and can be split into two categories: (a) collisionally excited lines ([OIII]4363, 4959, 5007 [Angstrom], [SII]6717, 6731 [Angstrom], [NII]5755, 6548, 6583 [Angstrom]) to estimate physical properties, like electronic density and temperature and ionic abundances; and (b) recombination lines of CII and OII (and others) to estimate ionic abundances.