|
|
| Use our "Random Page"
button to randomly browse our cool website! |
|
 |
|
|
|
|
Stairway, staircase, stairwell, flight of stairs
or simply stairs are names for a construction designed
to bridge a large vertical distance by dividing
it into smaller vertical distances, called steps.
Stairways may be straight, round, or may consist
of two or more straight pieces connected at angles.
Special stairways include escalators and ladders.
Alternatives to stairways are elevators, stairlifts
and inclined moving sidewalks as well as stationary
inclined sidewalks.
Bicycles were introduced in the 19th century and
now number about one billion worldwide. They are
the principal means of transportation in many regions.
They also provide a popular form of recreation,
and have been adapted for such uses as children's
toys, adult fitness, military and police applications,
courier services, and competitive sports... |
 |
|
 |
 |
|
|
|
