collider
machine that collides particles
A big science machine that makes tiny particles hit each other.
a collider; build/operate [a collider]
- The new collider will help researchers study how matter behaves at extremely high energies.
- Data from the collider revealed a rare particle decay that matched the team’s predictions.
- Engineers upgraded the collider to increase the number of collisions per second.
- Scientists use a collider to study tiny particles.
- The collider is a very large machine.
collision-detection component in software
In a game, a collider is a shape that lets objects bump into things correctly.
add/attach [a collider] to [an object]
- Add a collider to the character so it can’t walk through walls.
- The projectile uses a small sphere collider to detect hits accurately.
- If the collider is marked as a trigger, objects can pass through but still register contact events.
- I added a collider to the door.
- The ball’s collider is too big.
common-effect variable in causal graphs
In causal graphs, a collider is a result of two causes, and controlling for it can create bias.
condition/adjust/control for [a collider]
- In the diagram, hospital admission is a collider because it is affected by both illness severity and access to care.
- Adjusting for a collider can make two unrelated variables appear correlated.
- The analyst avoided conditioning on the collider to prevent introducing bias.
- Do not control for a collider in this model.
thing that collides
A thing that hits another thing.
the collider; the [first/second] collider
- Investigators estimated the collider’s speed from skid marks and vehicle damage.
- In the simulation, the collider struck the barrier at a shallow angle.
- Base: collider
- Plural: colliders
box collider
1rectangular collision shape in games
A square/rectangle-shaped collider in a game engine.
- Use a box collider for the platform to keep the physics calculations simple.
- The crate’s box collider didn’t match the model, so the player kept snagging on the edges.
collider bias
1bias from conditioning on a collider
A mistake in analysis caused by controlling for a collider.
- Selecting only patients who visited the hospital can introduce collider bias in observational studies.
- The researchers discussed collider bias as a possible explanation for the unexpected correlation.
collider variable
1variable caused by two factors
A result variable that has two causes.
- If treatment and risk both affect dropout, then dropout is a collider variable.
- The paper warns against adjusting for a collider variable when estimating the causal effect.
electron-positron collider
1collider for electrons and positrons
A collider that smashes an electron into a positron.
- An electron-positron collider can be ideal for precision measurements of particle properties.
- The lab considered building an electron-positron collider to complement existing proton experiments.
hadron collider
1collider for protons or other hadrons
A collider that smashes protons or similar particles together.
- A hadron collider can reach very high energies because protons are relatively easy to accelerate.
- The team compared results from a hadron collider with measurements from other detectors.
large hadron collider
1major particle collider at CERN
A famous huge collider used for particle physics in Europe.
- The Higgs boson was confirmed using experiments at the Large Hadron Collider.
- Upgrades at the Large Hadron Collider increased the amount of data collected each year.
linear collider
1straight-line particle collider
A collider that accelerates particles in a straight line.
- A linear collider can avoid some energy losses that occur in circular machines.
- The proposal outlined the cost and potential discoveries of a next-generation linear collider.
mesh collider
1collider matching a 3D mesh
A collider that follows the exact 3D shape of an object.
- A mesh collider worked better for the rocky terrain than a simple box shape.
- They switched to a simpler collider because the mesh collider caused frame-rate drops.