Seamus

InfraRed Communication and Device or Peripheral Control.

Firstly, infra is more or less the opposite of ultra, and light is not necessarily visible to the human eye. (Incidentally, Elephants have been found to communicate by infra sound as well, which can be felt more so than heard). Anyway, the first common application of infrared light communication would have been the remote control for a typical T.V. Its primary advantage was convenience and some... (posted by Seamus 6 years 258 days ago.)

Big End and Conrods or Connecting Rods

In recent times, some car manufacturers are opting to replace historically dowelled and interlocking arrangements of con-rod big ends, with physical breaks. There are many mechanics looking at these today, with bewilderment. Instead of machined faces, stress points are engineered and the casting is then broken. When bolted together, the big end bore or the conrod can be machined to... (posted by Seamus 7 years 6 days ago.)