Hi guys 👋 this is part 4 of DID YOU KNOW THAT...TRADE FACTS! 
 

💡 expert or constantly divising new safety measures that are extremely difficult for anyone to bypass or to duplicate it is due to some much measure that criminals nowadays find it difficult to Forge money the large Euro coins for instance have a magnetic core which is surrounded by a non magnetic ring in currency note the safety features or much more complicated this include watermark that one can see with the help of a backlight a micro print that one can read only with the magnifying glass and S shining silvery cinegram which is difficult to make in addition certain print on Bank notes can only be seen with the UV readers for this reason high value Bank notes or placed under a black light on the cash counter to check whether they are authentic.
💡 when the last ship of Magellan's expedition reached home after sailing around the world there was an interesting Discovery The Last entry made in this ship log deviated from the top the people left Behind buy one day after much speculation scientist came to the conclusion that every time a person journey around the earth the date upon return would be different from the one calculator according to standard time then realised that it was necessary to fix a certain date a line for such expedition according to which the correct log date could be calculated this line was drawn through a stretch in the Pacific Ocean where it was not divided by any continuous landmarks it is an imaginary line which goes zigzag from the north to the South Pole along the 180 degree longitude the sea Ferrero watch had to be set backward by 24 hours once the date line from west to east was crossed so that the same time would apply to 2 days.
💡 just as fast cars can often go of the curved due to the impact of centrifugal force trains to can lose contact with the track and get derived while negotiating curves expert where long in search of a technology to prevent this danger which trains had to avoid by applying brakes strongly before entering curve the solution was offered by tilt technology by which engine's and coaches could be slightly title to word that's the side due to that tilt the centre of gravity got shifted around the curve in the track and the wheels the remind connected with the rail till Technology the successfully countered centrifugal force with the help of this technology tryings could now achieve high speed even on stretches having lots of curve.
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