Things - Subway gates

The subway gates oblige a large amount of people to converge in very narrow passage.

In this way, yuo can get a very good control of all the people fluxes in a pubblic space.

Thing - Aperture

In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture of an optical system is the opening that determines the cone angle of a bundle of rays that come to a focus in the image plane. The aperture determines how collimated the admitted rays are, which is of great importance for the appearance at the image plane. If an aperture is narrow, then highly collimated rays are admitted, resulting in a sharp focus at the image plane. If an aperture is wide, then uncollimated rays are admitted, resulting in a sharp focus only for rays with a certain focal length. This means that a wide aperture results in an image that is sharp around what the lens is focusing on and blurred otherwise. The aperture also determines how many of the incoming rays are actually admitted and thus how much light reaches the image plane (the narrower the aperture, the darker the image for a given exposure time).

Go to: http://en.wikipedia.org/wiki/Aperture 

Thing - Funnel

A funnel is a pipe with a wide, often conical mouth and a narrow stem. It is used to channel liquid or fine-grained substances into containers with a small opening. Without a funnel, spillage would occur.

Go to: http://en.wikipedia.org/wiki/Funnel  

Things

From Oxford advanced learner’s Dictionary

Mean 1: an object whose name you do not use because you do not need to or want to, or because you do know it
Example 1 : Can you pass me that thing over there?
Example 2 : She’s very fond  of sweet things.

Mean 2: an object that is not alive in the way that people and plants are
Example 1 : Don’t treat her like that- she’s a person, not a thing!
Example 2 : He’s good at making things with his hands.

the thing of tying shoelace  is change the foot’s space  to fit

Pubblica post