Facts Inspiring

2022-04-30 09:26:45 Why we put Salt and Charcoal into Earth-pit while Earthing?

Earthing resistance is not the resistance of the electrode. The earthing resistance is not same all over the area. The value of earting resistance is depends upon the soil resistivity of the particular area. Actually the measured earth resistance is not only the resistance of the electrode, it is the combined resistance of conductor and the associated soil. During fault, if the soil resistance is higher the fault current cannot dissipate to associate soil.
To improve the conductivity of poor soil during fault current, salt and charcoal around the conductor is used to dissipate.
Charcoal is used to retain the moisture for long duration because it is an adsorbent and salt is added to increase the conductivity both these products help to pass the leakage current through earth wire as early as possible to remove the chances of shock.
We can practice permanent earthing compounds which are moisture independent as per IEEE 80–2013 clause 14.5(d). Open / Comment

2022-04-29 14:30:39 Open / Comment

2022-04-29 14:30:39 What are Water Fuelled Cars and why are they not more popular?

The term water-fuelled car broadly covers all the technologies that use water instead of fossil fuels as its main source of energy to drive the vehicle. Water is not fuel, but can produce fuel sources inside an electrolytic cell also called as the fuel cell. When water is separated into hydrogen and oxygen components and oxidized the energy output is 2.5 times more powerful than gasoline, and the byproduct of combustion is only water vapor.

However water by itself unlike fossil fuels cannot be used in internal combustion engines. Water, chemically is made up of 2 molecules of hydrogen and one molecule of oxygen, breaking down water through electrolysis gives us viable source of hydrogen and oxygen which can be both used to drive the vehicle's internal combustion engine. The problem is the amount of energy required to separate water into its constituent elements is more than what you get back when the molecules within the cell recombine.

There have been several carmakers who have attempted to make the water-powered cars work over the years. Despite many efforts by scientists and inventors, manufacturers lack the infrastructure required for effective deployment of existing technologies and face pushback from automobile industry lobbyists which can make the adoption of clean energy for transport more difficult than other technologies. Open / Comment

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2022-04-29 06:55:24 What is the Paris Agreement?

The Paris Agreement is a legally binding international treaty on climate change. It was adopted by 196 Parties at COP 21 in Paris, on 12 December 2015 and entered into force on 4 November 2016.

Its goal is to limit global warning to well below 2, preferably to 1.5 degrees Celsius, compared to pre-industrial levels.

To achieve this long-term temperature goal, countries aim to reach global peaking of greenhouse gas emissions as soon as possible to achieve a climate neutral world by mid-century.

The Paris Agreement is a landmark in the multilateral climate change process because, for the first time, a binding agreement brings all nations into a common cause to undertake ambitious efforts to combat climate change and adapt to its effects. Open / Comment

2022-04-28 14:30:34 How Do Antidepressants Work?

The main aim of treatment with antidepressants is to relieve the symptoms of severe depression, such as feeling very down and exhausted, and prevent them from coming back. They are meant to make you feel emotionally stable again and help you to follow a normal daily routine. They are also taken to relieve symptoms such as restlessness, anxiety and sleep problems, and to prevent suicidal thoughts.

The nerve cells in our brain use various chemicals to pass on signals. Even though not all details are known, experts believe that depression is caused by an imbalance of certain chemical messengers (neurotransmitters) like serotonin, which means that signals can't be passed along the nerves properly. Antidepressants aim to increase the availability of these chemicals. The various drugs do that in different ways. Open / Comment

2022-04-28 07:31:44 How do Game Developers make money?

Many of us play free video games. We install these games from marketplaces like Google Play Store or App Store without paying a single dime. So, did you wonder how these game developers publish their games for free?

Earlier, when there were no mobile phones and games were available either on PCs or gaming consoles. Game makers made money selling game CDs and cassettes. However, with the advent of technology and introduction of mobile gaming, developers found new means to generate revenue.

Currently, the revenue model of gaming companies is divided into two groups – 1) Paid by Ecosystem 2) Paid by Online Gamers

Paid by Ecosystem: This group includes in-app advertisements, in-game products or brand placements, and incentive based advertisement. Among these three, you must be familiar with In-app advertisements (IAA). In-app and incentive based advertisements are similar. While playing games on your phone, you may have watched several ads when progressing from one level to another, i.e. in-app advertisement. These range from ads for different games to insurance company ads. Game developers also earn money when they endorse products or brands in their games. This model is called In-game product or brand placement. For instance, if you play Asphalt 9, you will see racing cars of brands like Lamborghini, Mercedes, in the game. Here, the brands pay the game developers to endorse their products.

Paid by Online Gamers: This is a conventional route of generating revenue for game developers. However, currently, a significant portion of revenue comes from the ‘paid by ecosystem’ model. Here, online gamers pay game makers to get access to their online games. There are four routes, which game makers use to generate revenue.
1) Purchase/pay per download- Gamers pay an upfront fee to purchase or download the game.
2) Premium upgrades - A version of a game is available for free, but gamers must spend to access the next version or extra features of the game.
3) In App-purchases (IAP) - The game is available for free but gamers spend to purchase virtual objects (skins, new cars) or currency.
4) Subscription- Gamers purchase monthly or annual subscriptions of a game. Open / Comment

2022-04-28 07:31:36 Open / Comment

2022-04-26 15:30:15 How Do Cash Counting Machines Work?

Cash counting machines are made to count the number or denomination of bills that are placed into the machine. They pull in the bills, count the amount that was inserted, and give you the correct number of bills in a stack. This saves a lot of time and offers a mistake-free way to count large sums.

Cash counting machines are designed to count and sometimes sort bills. These machines have an internal beam that counts the number of times the beam of light is interrupted. This tells the machine how many bills have been counted. For machines that also help to detect counterfeit bills, there is a black light that illuminates the fluorescent images on real bills. This results in the ability to count the bills and detect counterfeit cash at the same time. There are also machines that can determine the denomination of each bill using colour image sensors, or CIS. The sensor scans and determines the value of the bill and adds this to the total on the display screen.

Coin Counters, These machines do for coins what cash counting machines do for dollar bills. They count the number of coins that are put into the machine. However, there are also some models that can also sort the coins into different denominations by sorting the coin sizes separately. This will count the total number of coins and the amount of value between them all while sorting dimes quarters, nickels, and pennies into their own slots. Open / Comment

2022-04-26 15:30:15 Open / Comment