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How does a mobile tracker work?

Mobile phone tracking relies on the use of triangulation – taking signal strengths registered from the mobile phone at a minimum of three nearby GSM receiver masts. As the mobile phone companies know the position of each mast, and can tell the signal strength of your phone at each of these nearby masts, they can use this to calculate the …

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How does a mirage trick the eye?

A mirage is a kind of optical illusion that occurs in hot, still weather. A pool of water suddenly appears in the distance. But on approaching, it seems to evaporate and there’s actually no water at all. You may see these mirages on roads in summer. They also occur in deserts, sometimes complete with trees, and may trick a thirsty …

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How do you test the presence of methanol?

Methanol does not respond to the iodoform test. In fact, the test is given by ethanol and those alcohols which possess -hydroxymethyl group or -CH(OH)- group or carbonyl compounds having acetyl functionality. Methanol can be detected by the oil of wintergreen test. In this test, 1-2 ml of methanol along with few crystals of salicylic acid are treated with concentrated …

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