### cell:

Single cell
* analyses of nitrergic neurons in simpler nervous systems.
* becomes abnormal and then it divides to form the whole tumor.
* can sense their position in a morphogen gradient.
* isolate from baking yeast.
* live in salt water oceans and diffuse nutrients and oxygen in and waste products out.
* make copies of their chromosomes and divide into two cells.

Small cell
* mean little is lost if a single cell fails to arrive.
* reduce latency.

Smaller cell
* are easily visible under a light microscope.
* mean many more cells to cover the same area.

### cell:

Solar cell
* Run a fan motor from a light source shining onto a solar cell.
* adapt to the varying intensity of the sun's rays.
* are a special class of semiconductors that convert sunlight into electricity.
* are also useful where low amounts of power are needed
  - very practical as building materials
  - an astonishingly attractive way to make electricity
  - connected and arranged into a single panel
  - electrical components
* are expensive and inefficient, so the cost of their electricity is high
  - to buy
  - inefficient, fragile, and expensive
  - part of solar arrays
  - photovoltaic devices
  - regarded as one of the key technologies towards a sustainable energy supply
  - semiconductor devices which convert sunlight directly into electricity
* are the building blocks of photovoltaic modules, otherwise known as solar panels
  - core component inside every solar electric power system
  - thick pieces of silicon
* can deliver a respectable charging current in bright sun.
* change radiant energy into electrical energy.
* collect solar energy then transfer that energy to the battery.
* convert light energy into electricity
* convert sunlight to electricity within wafer thin cells
  - the energy of sunlight into electric energy
* generate electricity directly from sunlight.
* have many applications
  - no moving parts
  - relatively low efficiencies
  - very low storage capacity but constantly generate more power
* made of semiconducting materials directly convert sunlight into electricity.
* make absolutely no noise at all
  - electrical power from sunlight
* produce electricity directly from sunlight
  - when sunlight strikes silicon coated with various materials
  - no greenhouse-warming carbon dioxide
  - zero carbon dioxide, the chief greenhouse gas
* provide a clean way of making electricity directly from sunlight.
* supply electricity without emitting any greenhouse gases or other pollution
  - the power for the motor and charge the on-board batteries for night flight
* turns light into electricity that powers a small electrolyzer.
* works in low light or with flashlight at night.
+ Solar cell, Solar cells applications: Solar energy :: Electronic components :: Electricity
  * Solar cells have many apps. They have long been used in situations where electrical power from the grid is unavailable, such as in remote area power systems, Earth-orbiting satellites and space probes, consumer systems, e.g. handheld calculators or wrist watches, remote radiotelephones and water pumping applications. More recently, they are starting to be used in assemblies of solar modules connected to the electricity grid through an inverter, often in combination with a net metering anger magnegment
  - energy, Types of technologies, Solar cells: Astrophysics :: Solar energy :: Solar power
  * Solar cells have many applications. They have long been used in situations where electrical power from the grid is unavailable, such as in remote area power systems, Earth-orbiting satellites and space probes, consumer systems, e.g. handheld calculators or wrist watches, remote radiotelephones and water pumping applications