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Transcript of Great inventions
The telephone or phone (Greek: tele = far away and phone = voice) is a telecommunications device that transmits speech by means of electric signals.
Alexander Graham Bell's first device was built in Boston, Massachusetts, in 1876.
done by Maskaeva A.A.
Done by Gasanbekov Rasim
A Mobile Phone
A mobile phone (also known as a cellular phone, cell phone, and a hand phone) is a device that can make and receive telephone calls over a radio link while moving around a wide geographic area. It does so by connecting to a cellular network provided by a mobile phone operator, allowing access to the public telephone network. By contrast, a cordless telephone is used only within the short range of a single, private base station. In addition to telephony, modern mobile phones also support a wide variety of other services such as text messaging, MMS, email, Internet access, short-range wireless communications (infrared, Bluetooth), business applications, gaming and photography. Mobile phones that offer these and more general computing capabilities are referred to as smartphones.
The first hand-held cell phone was demonstrated by John F. Mitchell and Dr Martin Cooper of Motorola in 1973, using a handset weighing around 2.2 pounds (1 kg). In 1983, the DynaTAC 8000x was the first to be commercially available. From 1990 to 2011, worldwide mobile phone subscriptions grew from 12.4 million to over 6 billion, penetrating about 87% of the global population and reaching the bottom of the economic pyramid
The invention of the wheel falls in the late Neolithic, and may be seen in conjunction with other technological advances that gave rise to the early Bronze Age. Note that this implies the passage of several wheel-less millennia even after the invention of agriculture and of pottery:
*9500–6500 BC: Aceramic Neolithic
*6500–4500 BC: Ceramic Neolithic (Halafian), earliest wooden wheels (disks with a *hole for the axle)
c. 4500 BC: invention of the potter's wheel, beginning of the Chalcolithic (Ubaid period)
*4500–3300 BC: Chalcolithic, earliest wheeled vehicles, domestication of the horse
*3300–2200 BC: Early Bronze Age
*2200–1550 BC: Middle Bronze Age, invention of the spoked wheel and the chariot
A wheel is a circular component that is intended to rotate on an axial bearing. The wheel is one of the main components of the wheel and axle which is one of the six simple machines. Wheels, in conjunction with axles, allow heavy objects to be moved easily facilitating movement or transportation while supporting a load, or performing labor in machines. Wheels are also used for other purposes, such as a ship's wheel, steering wheel, potter's wheel and flywheel.
Common examples are found in transport applications. A wheel greatly reduces friction by facilitating motion by rolling together with the use of axles. In order for wheels to rotate, a moment needs to be applied to the wheel about its axis, either by way of gravity, or by the application of another external force or torque.
Wide usage of the wheel was probably delayed because smooth roads were needed for wheels to be effective. Carrying goods on the back would have been the preferred method of transportation over surfaces that contained many obstacles. The lack of developed roads prevented wide usage of the wheel for transportation until well into the 20th century in less developed areas.
Early wheels were simple wooden disks with a hole for the axle. Because of the structure of wood, a horizontal slice of a tree trunk is not suitable, as it does not have the structural strength to support relevant stresses without failing; rounded pieces of longitudinal boards are required.
A bulletproof vest, ballistic vest or bullet-resistant vest is an item of personal armor that helps absorb the impact from firearm-fired projectiles and shrapnel from explosions, and is worn on the torso. Soft vests are made from many layers of woven or laminated fibers and can be capable of protecting the wearer from small-caliber handgun and shotgun projectiles, and small fragments from explosives such as hand grenades.
Metal or ceramic plates can be used with a soft vest, providing additional protection from rifle rounds, and metallic components or tightly woven fiber layers can give soft armor resistance to stab and slash attacks from knives and similar close-quarter weapons. Soft vests are commonly worn by police forces, private citizens, security guards, and bodyguards, whereas hard-plate reinforced vests are mainly worn by combat soldiers, police tactical units, and hostage rescue teams.
Modern body armor may combine a ballistic
vest with other items of protective clothing, such as a combat helmet. Vests intended for police and military use may also include ballistic shoulder and side protection armor components, and bomb disposal officers wear heavy armor and helmets with face visors and spine protection.
In 1538, Francesco Maria della Rovere commissioned Filippo Negroli to create a bulletproof vest. In 1561, Maximilian II, Holy Roman Emperor is recorded as testing his armor against gun-fire. Similarly, in 1590 Sir Henry Lee expected his Greenwich armor to be "pistol proof". Its actual effectiveness was controversial at the time. The etymology of "bullet" and the adjective form of "proof" in the late 16th century would suggest that the term "bulletproof" originated shortly thereafter.
Done by: Andrey Kulikov.
First developed in 1991, a webcam was pointed at the Trojan Room coffee pot in the Cambridge University Computer Science Department.
A webcam is a video camera that feeds its image in real time to a computer or computer network .
Unlike an IP camera, a webcam is generally connected by a USB cable, FireWire cable, or similar cable.
done by Avdeev A.A.
False eyelashes first invented Max Factor. He is most famous make-up artist of the XX century . Today, his name has become a famous brand.
Max Factor created the first artificial eyelashes for the actress Phyllis Haver , who was the first to perform the role of Roxie in the musical " Chicago " in 1927.
It looked very close to all unnatural , and this beauty was very short-lived and expensive to manufacture. But for the stars of cinema and television was suitable .
In 50 years, a new wave of popularity of eyelash extensions , now of ordinary women . After the procedure has been improved and is much more accessible than ever before.
done by Lisafina Mary
History of Cloks:
In 1577, Jost Burgi invented the minute hand. Burgi's invention was part of a clock made for Tycho Brahe, an astronomer who needed an accurate clock for his stargazing.
Whose work is it?
The first modern famous clock that must be mentioned is the atomic clock. The road to the current atomic clock can be read in our previous post. The current relevant point is what the atomic clock did for all of “clockdom”. The time of a second is extrapolated from the amount of time in a minute. The length of a minute is rooted in the length of an hour. The span of an hour is based upon the length of a day. The amount of time in a day is based upon celestial bodies. A day is how long it takes the Earth to rotate on its axis. The atomic clock changed all of that.
whose work is it?
Prepared by Alexander Nikolaev.
Using boiling water to produce mechanical motion goes back about 2,000 years, but early devices were not practical. The Spanish inventor Jerónimo de Ayanz y Beaumont patented in 1606 the first steam engine. In 1679 Thomas Savery developed a steam pump that used steam in direct contact with the water being pumped. Savery's steam pump used condensing steam to create a vacuum and draw water into a chamber, and then applied pressurized steam to further pump the water. The first commercial true steam engine using a piston was developed by Thomas Newcomen and was used in 1712 for pumping in a mine.
In 1781 James Watt patented a steam engine that produced continuous rotative motion.
by Pavel Shulpin
TV-electronic device to receive and show the picture and sound are transmitted by wireless means or by cable.
The inventor of the TV - Professor of the St. Peterburg technological institute Boris Rosing.May 9. 1911 . he won the first tv image.
Done by Brunov A.M.