Engineering
Explore the educational catalogue, one Discovery at a time.
- Archive 00472
The machine that mapped the ancient sky
- Archive 00478
The intelligence hidden inside a wooden joint
- Archive 00506
The underground slope that carries water
- Archive 00507
The bridge renewed by its communities
- Archive 00508
Dujiangyan's three-part water problem
- Archive 00509
How a canal lifts a ship
- Archive 00510
The flexible layer beneath Te Papa
- Archive 00511
The bicycle that challenged a familiar explanation
- Archive 00512
The holes that tell a loom what to lift
- Archive 01012
Why a lever trades distance for force
- Archive 01013
What a gear ratio changes
- Archive 01014
How a pulley shares a load
- Archive 01015
Why a screw turns rotation into travel
- Archive 01016
How a cam gives motion a schedule
- Archive 01017
How a differential lets wheels disagree
- Archive 01018
Why bearings reduce resistance
- Archive 01019
How a flywheel smooths a pulse
- Archive 01020
Why beams bend differently in different shapes
- Archive 01021
How a truss sends forces through triangles
- Archive 01022
Why an arch pushes sideways
- Archive 01023
How a suspension bridge carries its deck
- Archive 01024
Why a slender column can buckle
- Archive 01025
Why concrete needs reinforcement
- Archive 01026
How a foundation spreads a building’s load
- Archive 01027
Why expansion joints leave room to move
- Archive 01028
How fatigue grows from repeated loads
- Archive 01029
Why a crack concentrates stress
- Archive 01030
Why steel responds to heat treatment
- Archive 01031
How casting turns a cavity into a part
- Archive 01032
What forging changes inside metal
- Archive 01033
Why welding needs a controlled joint
- Archive 01034
How injection moulding repeats a shape
- Archive 01035
What additive manufacturing can and cannot simplify
- Archive 01036
Why machining needs a tolerance
- Archive 01037
How composites share work between materials
- Archive 01038
Why corrosion needs an electrochemical path
- Archive 01039
How a surface coating protects a component
- Archive 01040
How an electric motor creates rotation
- Archive 01041
How a generator converts mechanical work
- Archive 01042
Why transformers need changing current
- Archive 01043
How a battery separates two reactions
- Archive 01044
Why a heat pump can move more heat than its electricity input
- Archive 01045
How a heat exchanger keeps fluids apart
- Archive 01046
How district heating shares a source of warmth
- Archive 01047
What a turbine takes from a moving fluid
- Archive 01048
Why solar cells need a semiconductor junction
- Archive 01049
How insulation slows heat transfer
- Archive 01050
How a centrifugal pump gives water energy
- Archive 01051
Why pipes lose pressure along the way
- Archive 01052
How a valve changes a flow
- Archive 01053
Why cavitation damages a pump
- Archive 01054
How a water-treatment filter catches particles
- Archive 01055
How wastewater treatment uses living microbes
- Archive 01056
Why roads need drainage beneath their surface
- Archive 01057
How a tunnel is supported as it grows
- Archive 01058
Why wings must change the air’s momentum
- Archive 01059
How a propeller turns rotation into thrust
- Archive 01060
Why jet engines compress air before combustion
- Archive 01061
How railway wheels follow a curve
- Archive 01062
Why braking creates a heat problem
- Archive 01063
How feedback corrects a drifting system
- Archive 01064
Why installing a sensor changes what it measures
- Archive 01065
How a fuse interrupts excessive current
- Archive 01066
How a transistor controls a current
- Archive 01067
Why a digital circuit needs noise margins
- Archive 01068
How sampling turns a changing signal into numbers
- Archive 01069
Why error-correcting codes add redundancy
- Archive 01070
How optical fibre confines a signal
- Archive 01071
Why engineering prototypes test assumptions
- Archive 01072
How failure analysis improves a design
- Archive 01073
Why redundancy can share a hidden weakness
- Archive 01074
How designing for repair changes a product
- Archive 01075
Why a system’s bottleneck limits its output
- Archive 01076
Why the electrical grid must balance supply and demand
- Archive 01077
How a control chart distinguishes drift from noise