contact
Let an agent explain contact events in physics and engineering, give safety guidance for collisions, and separate social and electrical senses of contact.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Physics Collisions.
Momentum
Momentum and energy.
Momentum
Momentum and energy.
- What are the velocities after this collision, using momentum conservation? measurement
- Is the collision elastic or inelastic? boundary
Forces
Contact forces.
Forces
Contact forces.
- What forces act at the contact, such as normal force and friction? definition
- How large is the impact force? measurement
Engineering Contact mechanics.
Gears
Meshing.
Gears
Meshing.
- How do gears mesh, and what determines wear? definition
- Which lubrication applies? provenance
Wear
Wear and fatigue.
Wear
Wear.
- How does repeated contact cause wear or fatigue? definition
- How is it measured? measurement
Safety Collisions.
Crash
Vehicle collisions.
Crash
Vehicle collisions.
- Has a collision caused injuries? boundary
- Should emergency services be called and the scene made safe? action
Sport
Contact sports.
Sport
Contact sports.
- Which rules and protective equipment reduce injury in this contact sport? provenance
- What are the concussion protocols? provenance
Senses Disambiguation.
Social
Communication.
Social
Social sense.
- Is contact meant as communication or a person in an address book? boundary
- Which entry fits? action
Electrical
Electrical contacts.
Electrical
Electrical sense.
- Is an electrical contact or contact lens meant? boundary
- Which entry fits? action
Classifiers Filled
- Family
- Thing Registry
- Category
- Activities and processes
- Entry kind
- noun.event
- Plane
- ACT
- Domain
- ACT.EVT
- Facets: substance
- activity
- Facets: origin
- conceptual
- Facets: agency
- inert
- Facets: mobility
- not-applicable
- Facets: scale
- not-applicable
- Facets: affordances
- observable
- Other names and narrower kinds
- collision, hit, engagement, mesh, meshing, interlocking, flick, impact, blow, bump, slam, jolt
What it is Filled
The physical coming together of two or more things, such as a collision, an impact, meshing of gears, interlocking parts or a touch; contact events are studied in mechanics for forces and energy transfer and matter in safety, engineering and sport.
Why it exists Filled
Let an agent explain contact events in physics and engineering, give safety guidance for collisions, and separate social and electrical senses of contact.
Distinguishing features Filled
- Physical touching
- Transfers force and energy
- Elastic or inelastic
- Central to mechanics
What robots and AI may and may not do Filled
Must not
- Continue moving after unexpected contact with a person.
- Disable contact or collision sensors on machines that work near people.
- Treat contact with a person as harmless without checking.
- Hide records of collisions from the operator or investigators.
Only with a human decision
- Resuming operation after a collision that may have caused injury or damage.
May
- Detect and log contact events between machines, parts or objects it monitors.
- Stop or slow its own motion when unexpected contact occurs.
Moral aspects Filled
- Contact between machines and people causes injury; detection protects bodies.
- Collision records decide liability and must stay honest.
Who is affected
- People near moving machines
- Operators
- Owners of damaged property
Owners Filled
Steward
Nobody owns the event; the operator of the machine answers for contacts it causes.
Links to other meta-models Filled
parent
- oewn-07298313-n - registry parent class
related
- event - category
- mechanics - field
- inertia - physics
- response - reaction
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.contact-event
- Open English WordNet: oewn-07353929-n
Direct properties not applicable Not applicable
Not applicable
Plane ACT: no invented physical properties.
Recognition optional Filled
- Impacts and meshing parts
- Deformation at contact points
- Electrical contacts are conductive connections
- Objects touching, striking or interlocking.
Capabilities and actions required Filled
- analyse collisions with momentum and energy
- explain contact mechanics such as friction and wear
- give collision safety guidance
- separate other senses of contact
Hazards and failure modes required Filled
- Injuries from collisions
- Wear and failure at contact surfaces
- Confusing senses of contact
Standards and interfaces required Filled
- Vehicle crash test standards
- Sports contact rules
- Machinery guarding standards
Context of use required Filled
- Mechanics, engineering, safety and sport.
- collisions and impacts
- meshing and interlocking
- sliding and rolling contact
- sports contact
- vehicle collisions
Sources Filled
- Open English WordNet 2024, synset oewn-07353929-n - sense and gloss of the concept
- Wiktionary: contact - word senses and usage
Open questions
- Should collisions be a separate entry?
- How should contact mechanics resources be linked?
- How should other senses be split off?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-contact-event/spec.json