### implement | bar | lever | pedal:

Accelerator
* Most accelerators create energy
  - produce cell growth
* Some accelerators are part of aeroplanes
  - airplanes
  - automobiles
  - jets
* Some accelerators produce beams
  - electron beams
* allow scientists to pulse the beam.
* also find applications in medicine and the biosciences.
* are chemicals that accomplish the same end
  - key bindings that provide quick access to menu functions without posting the menu
  - located in vehicles
* are part of airplanes
  - fuel systems
  - pedals
  - the instruments of choice by scientists engaged in particle physics research
  - used for speed
  - valves
  - very small amounts of short-lived nuclear waste
* enhance the use of cyanoacrylates in many diverse assembly situations.
* give the protons enormous energy.
* have strength.
* serve as valuable tools for scientific research into the nucleus of an atom.
* sometimes cause nuclear reactions to make radioactive materials.
+ Nuclear reaction: Nuclear physics
  * Nuclear reactions occur in the sun, in nuclear reactors, in particle accelerators, and in outer space. Other than radioactive decay, very few nuclear reactions occur on earth except in these special places. Nuclear reactors use nuclear reactions to make heat and electricity. Accelerators sometimes cause nuclear reactions to make radioactive materials. Particles from outer space cause nuclear reactions in earth's atmosphere that make air slightly radioactive.

### implement | bar | lever | pedal | accelerator:

Biocatalyst
* are strictu sensu the catalysts of cell metabolism, i.e. the enzymes.
* greatly simplify production and in some instances make it possible in the first place.
* is an accelerator

Modern accelerator
* generate vast quantities of data.
* provide beams of higher intensities.

### implement | bar | lever:

Tiller
* All tillers begin as a growing point developing from a dormant bud at or below ground level.
* Some tillers produce inflorescences, while others remain vegetative
  - stay vegetative, while others become reproductive and produce seedheads
* are basal branches of the main stalk
  - counted as soon as they emerge above the soil surface or the leaf axil
  - farmers
  - lateral branches that form at lower, below ground nodes
  - levers
  - new shoots that are sent up from the root of the plant
  - part of rudders
  - shoots that develop from nodes on the main stem
* begin to emerge during the application time period for most wild oat herbicides.
* die after flowering but decompose slowly due to compaction and low temperature.
* increase the shoot density of lawns by replacing shoots that die in winter and summer.
* originate from seed or from vegetative buds on previously existing plants.

### implement | bar | lever | tiller:

Diseased tiller
* are also prone to lodging.
* tend to mature early and produce whiteheads that contain incompletely filled seed.

Harrow
* are cultivators.
* come in two main types, spring-tooth and disc.
* lead the game of darts.
* pastures to break up feces and expose larvae to the elements.
+ Harrow School: Schools in England :: Middlesex
  * Harrow is an independent fee-paying school, of the type known in Britain as 'public schools'.