Dr Hayden J. Jamer
an Australian Student.
There is not much information on the young scholar but he is working on many vast inventions.
they invented the first transistor:)
brazil invented the first photocopier machine
In 1902 Willis H Carrier invented the modern air conditioner.
Yes, Fahrenheit's scale was the first of the five main scales.
The battery was invented by Alessandro Volta in 1800. He created the first modern battery, known as the voltaic pile, which was an early version of the electric battery and paved the way for future advancements in electricity.
The duration of Clapperboard - TV series - is 1500.0 seconds.
Clapperboard - TV series - was created on 1972-04-14.
Clapperboard - TV series - ended on 1982-01-01.
You might be talking about a clapperboard? http://en.wikipedia.org/wiki/Clapperboard
A clapperboard is used to synchronize sound and picture and to mark the takes and scenes of a particular picture. You can get more information about this at the Wikipedia. Once on the page, type "Clapperboard" into the search field at the top of the page and press enter to bring up the information.
A Clapperboard .
Clapperboard ,
A clapperboard.
A clapperboard.
Clapperboard
a megaphone ?
It's called a clapboard, or a clap slate, or a clapperboard. According to Wikipedia (see the Related Link below), "Other names for the clapperboard include clapper, slate, slate board, sync slate, time slate, sticks, board, and marker."