Afg Learner

What is the 11 year solar cycle?

The solar cycle or solar magnetic activity cycle is the nearly periodic 11-year change in the Sun's activity (including changes in the levels of solar radiation and ejection of solar material) and appearance (changes in the number and size of sunspots, flares, and other manifestations).

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How do Batteries get charged?

Inside each cell, chemical reactions take place involving the two electrical terminals (or electrodes) and a chemical known as the electrolyte that separate them. The good news is that if you're using a rechargeable battery, you can make the chemical reactions run in reverse using a battery charger.
Generally all smartphones we use contains lithium ion batteries.
A lithium-ion battery or Li-ion battery is a type of rechargeable battery in which lithium ions move from the negative electrode to the positive electrode during discharge and back when charging.

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What is Electric Blanket?

An electric blanket is a bed covering with a built-in heating element so that a sleeper can maintain a desired temperature even in a cold room. Many consumers prefer electric blankets because their use can reduce home heating costs. The sophisticated temperature controls of modern electric blankets can sense changes in skin and air temperature and adjust settings accordingly. The most advanced model blankets are programmable, so they can pre-warm the bed at a certain time and shut off at a certain hour. They are also able to adjust temperature for the needs of two people in the same bed. Some blankets even compensate for the different heat needs of different parts of the body; for instance, sending more heat to the sleeper's feet while leaving the head area cooler. Approximately 4.5 million electric blankets are sold in the United States annually.

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