July 10, 1962 into orbit, the first communications satellite Telstar-1. He became the world’s first commercial satellite, and opened an era of satellite telephony and television. For the development of satellite communications, were working together telecommunications company AT&T, Bell Telephone Laboratories, and NASA, along with British and French Telegraph services, and the launch of Telstar demanded considerable at the time the amount is $3 million.
But the result was worth it – companion coped with the broadcast of television programs and concluded a 60-channel telephony. Previously with similar objectives was put into orbit an experimental NASA satellite Echo-1, however, he pursued a purely scientific goals, and was a ball reflecting signals from Earth.
Telstar was much more and while its small dimensions (weight of 171 kg, a diameter of 88 cm) was Packed with the transmitting and receiving electronics.
The satellite Telstar predicted role in international television programming and telephone service, but he lived long
From the moment you start to launch a satellite, it took just over 2.5 hours – he took off from the American air force base near Portland. On the same day Telstar engaged in the service of telephone conversations, Fax transmissions and broadcasting. Even the air was satellite capable, which was used by U.S. President John F. Kennedy, after a transatlantic press conference.
Companion-trailblazer stopped working pretty ridiculous way – as a result of nuclear tests the United States called Starfish Prime, when Americans became curious, what effect will bring a nuclear weapon if it explode in space?
Within this nuclear program, the U.S. armed forces first unsuccessfully launched a rocket with nuclear weapons and “splashed” radiation island near Hawaii. But a month later caused the warhead to explode at an altitude of 400 km from the Earth, causing all the electrical appliances and electronics have failed within a radius of 1500 km, and Went to almost all satellites in a low orbit, including Telstar, which by that time did not have time to work and 6 month.
10 July 2007 was published the first method of jailbreak for the Apple iPhone. Since then, the hacking system called “jailbreak” accompanies all new smartphones from Cupertino.
Historically this operation with their cell phones Apple users was done for several reasons. First jailbreak organized themselves known, including, for hacking the Sony PlayStation 3 hacker Geohot.
Jailbreak allowed to use the potential of the iPhone “on all cylinders” and became one of the causes of pirated programs for Apple’s smartphone
The debut version of the iPhone have been “locked” to work with a cellular carrier AT&T that satisfied not all buyers. Geohot has made unlock your phone from SIM cards of a particular cellular operator. On the video in YouTube 17-year-old hacker demonstrated the first “liberated” iPhone for example cellular T-Mobile.
In addition to the SHSH keys jailbreak on the first generation iPhones allowed to change the desktop Wallpaper and ringtone. Then came the “in-house” programs that you can install on your smartphone, bypassing the official App store. Exotic programs (largely) and tweaking of the iOS interface (to a lesser extent) became the reasons for jailbreaking and modern versions of the iPhone.
To prohibit “pick” the firmware of smartphones to their customers, Apple has not been able, therefore, from a legal point of view, the jailbreak remains a legal method of operating an iPhone. However, with each new version of iOS Apple programmers deprive users of the possibility of “escape from prison” the old way – the battle between armor and projectile (hackers and developers of iOS) does not cease to this day.
May 10, 1968 in the USA registered a patent for a laser Blaster (gun). In the patent described the method of operation “portable beam generator”, which does not require wiring to the power supply and principle of operation of the weapon was based on the properties of pulsed laser, consisting of a compact of the pumping source and the resonator. It was implied that this gun was able to occasionally produce beam shots and very awkward to reload lamps required for firing.
The content of the first patent for a laser gun
Although outwardly a weapon like a firearm counterparts, the power of these “blasters” leaves much to be desired – even modern designs laser weapons can barely burn a foam or a thin layer of wood at the distance of 3 meters. Hence, any lethal use of such “guns”.
Soviet laser pistol
By the way, in the USSR since the mid 1980-ies, the astronauts relied laser gun. However, it was designed to damage the optical systems of the enemy in conditions of weightlessness, when firearms were rather inefficient and could kill its owner and a space ship than to hit the intended target. To harm another astronaut was required aimed fire in the eyeball that for a person without specialized training in real life was hardly feasible.