15 things that have changed beyond recognition

• 15 things that have changed beyond recognition

Foot rollers, rescue mattress, a hard disk, weighing 1 ton, toasters incredible beauty and other things from the past, which now looks very different

By the beginning of the new, twentieth century, the United States is already in full riding on roller skates, which were partially similar to today in its configuration and design. And in Sweden and Denmark have received popularity pedal rollers Takypod, invented by Edward Petrini. Surprisingly, it looks very modern - could be sold in a store with some segway.

In 1956, IBM introduced its first drive on the hard disk. He weighed more than a ton and stored 5 megabytes of data. Should come down to a half-century weakest iPhone 5S weighs 112 grams and has 16 gigabytes of memory - roughly 3,200 times more.

So look American life jackets for the men - or rather, rescue mattresses - as early as 1917.

One of the first mass calculators Marchant XLA (1913). In this pocket you will not put. Suited for large stores and purchases for merchants large department stores and cashiers banking institutions. Attached is a separate instruction for 130 pages.

The first electric drill from the German firm Fein (1895). In the XIX century, even the tools look like an expensive piece of furniture.

One of the first American brand of washing machines with electric drive Thor (1908). The vehicle had a wooden drum, which in turn made 8 turns clockwise and 8 against. To connect the drum to the motor shaft, there is a small lever.

The first lawn mower (1916) as eskperimenta few weeks has been used in the Missouri Botanical Garden. It was so loud that the first delivery had to be suspended - a quieter version appeared only a year later.

The sound locator in the US (1921). Since the US military monitored the its airspace even less than a hundred years ago.

The first working printer ever made on the basis of the invention, mathematics Charles Babbage in 1834. This model bulky mechanical computer, which had the automatic printing function called "difference engine". Fully model was assembled on old drawings only after 150 years.

In 1905, the German Karl-Ludwig Nessler demonstrated his invention - hardware perm. It looked like this: during the presentation of the device on the hair is wound models were twelve long and rather heavy brass rod connected to the electrically heated unit. The entire procedure lasted about five hours.

Toaster firm Frary & Clark (1924) - not the first, but the most beautiful. Now this is not exactly doing.

Wardenclyffe Tower (1901-1917 years) - the first wireless telecommunication tower, designed by Nikola Tesla and was intended for commercial transatlantic telephone, radio and a demonstration of wireless power transmission. Is interesting as an example, might look like towers of cellular operators a hundred years ago - imagine that these thousands!

The American portable radio (1921) to soothe the baby in the stroller or crib; baby monitor of the last century, large and impressive.

Orthopedic simulators (1893), invented by the Swedish physician Gustav Zander. Particularly popular in Stockholm aristocracy.

Even like a laptop in the open form, but it is uncommon in the folded device - black boxes with small screens, more like a modern cash registers. The first laptops: Gavilan (1983) and Grid compass (1982).