Info Tech

Find out how we patch up holes in vessels and pipes in a watery environment Joining and fusing materials together has been a key part of engineering for centuries, but what about doing it underwater? High-pressure welding, more formally called hyperbaric fabrication, can now be undertaken in water in two ways. Dry welding is done in a closed chamber, while wet welding can join metals completely exposed to water.  An example of a dry welder is the Deep Rover submersible. Primarily used for exploration, this vehicle can hold up to two people in a sealed sphere and is capable of lifting chunks of metal  too. Wet welding, on the other hand, creates a bubble of carbon dioxide around the weld point while the repair is made. Dry welding is safer due to the added protection but tends to be more  expensive and time-consuming. Therefore, dry is better for larger, more involved projects while wet is generally used for smaller tasks. Both are used primarily t...

No need to take language learning classes , this task will be accomplished by "Skype" The immensely popular internet phone and messaging service Skype has approximately 300 million monthly global users. For its next trick, the Microsoft-owned service plans to break down language barriers by automatically translating multilingual voice calls. This bold claim is backed up by some impressive technology. Using a combination of existing speech recognition, text-to-speech and machine translation technology, the program will translate any word you utter into a text format of the desired language. Current translation programs use a similar system but can currently only work if they are in the same room. The new Skype software will look to change that, allowing for fully translated international calls. One stumbling block is the vast amount of different dialects and accents used all over the globe. Because of this, some say there will always be a need for human i...

How it is possible that internet accurately know what kind of things we "like" or "dislike" Advertisers use a range of information  about you, like your age, gender and  location, to flag up relevant ads If you look at a product on the web you may find that it follows you around, popping up in adverts on seemingly unrelated websites.  This is one of the simplest forms of targeted advertising. When you visit a website, third-party advertisers leave tracking cookies in your browser, enabling them to monitor your online activity and remind you later of items or services you looked at earlier. Search engines like Google collect data about the searches performed from a particular IP address, taking into account search terms, but also the user’s location.  They even target advertising based on keywords collected from the messages in your email inbox. Your activity on Google-owned sites like YouTube is also fed back to advertisers...

Planning This is where humans really trump computers. Humans can map out a series of sequences to lead us to a goal. Involving millions of neurons interacting in yet fully understood ways, computers lack this ability for now . Logic Computers are extremely linear when it comes to thinking. Because of this – as well as their lack of  emotional responses – they can work logically through commands to reach the best possible solution.  Maths There’s no denying it, computers are geniuses when it comes to doing sums. Just ask your calculator. Again, because base mathematics is the input of data and the extraction of a single solution, a simple programme can work through calculations extremely quickly. Speed   Computers are able to operate at much faster speeds because they are stripped-down basic brains. Just think, even though a Land Rover may have more horsepower than a Ferrari, the latter is faster because it has less weight to hold it ...

To disperse crowds and prevent rioting, various forms of non-lethal weapons (NLW) are used. Among these, interestingly, is sound. Known as an acoustic or sonic weapon, infrasound (superlow frequency) and ultrasound (super-high frequency) greatly affect human ears. They can disorientate a target and have psychological effects as well as physical effects of nausea and damage to blood vessels. Explanation Ultrasound can be increased to 120 decibels (the same volume as a jumbo jet taking off), which is considered the human pain threshold. In contrast, infrasound feels like a damaging vibration or pressure wave, as it’s at a frequency too low for humans to hear. When exposed to high levels of sound, the influx of energy has a painful effect on the body. As well as huge decibels of volume, the variations in frequency can also cause damage. For instance, an infrasound of seven or eight Hertz can rupture blood vessels. Certain types of sound within the frequencies we are able to he...

Thomson discovered the electron using this concept in 1897 after conducting experiments with cathode rays and studying their uses. Electron guns are a very versatile electrical component. They are essential to a number of devices, from 3D printers and welders to the large synchrotron at the Diamond Light Source in the UK and the electric systems of Kimball Physics in the US So how they work It’s all down to kinetic energy and electrical currents. When installed in an electrical device’s vacuum tube, the gun turns electrons and ions into usable beams of energy by releasing them from their  metal source (cathode). This process is known as thermionic emission. Inside the gun there is a small filament that heats the cathode, which makes it release a stream of electrons. The electrons accelerate rapidly and the resulting beam is pulled toward the neighbouring anode, which is positively charged. There are small holes in the anode which allow some electrons to pass through, so a...

Solar powered rubbish bins look like ordinary dustbins but these are powered by light(sun), so the question is what is power is used for ? Actually these dustbins has an trash compaction system which is powered by light or solar system and some other intelligent features explained bellow  Features  They crash litter  Send notification (usually email) when full  Make collection process efficient  Totally powered by sun   How it work You can see the parts of the solar bin in the picture.These bins contain a sensor to detect when it is full , when the litter reaches to a specific thresh hold it start the compaction process, it use a 12 volts battery which is charged by sunlight. Normally these bins have capacity of 800 litres (180 gallons) , due to its low power consumption it can be even used in shaded places  It use a wireless transmission system which is connected to the sensor and it send a signal to the local waste collecto...