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What is the material to make printed circuit board?
FR-4 glass-reinforced epoxy. In fact, FR-4 is the grade of the fiber.
What is a boomerang made of?
How To Build a Boomerang: You will need: # Dark Shades of paint... (reds, browns, blacks) # Medium width wood # Saw Step 1: First you must measure 20cm on to the wood. Draw a line in pencil that is going diagonal making sure that you have enough room for another 20cm. Then Do the same step again but making the line so that one of the points meet, (making a v shape) Step 2: With a pencil go around the v shape so it makes more of a curve then rub out the v shape Step 3: From your curve which should look like a rainbow go 3 cm out from the bottom of the start of one side of the line. Then draw the same shape but on the out side o it. Step 4: Join the 2 ends down the bottom with a curvy line, now its time to get the saw and cut around the marked line. Step 5: NOw paint the cut out shape in the pattern you would like You have a Boomerang
What is a printed circuit board?
A printed circuit board is basically used to mechanically support while at the same time electrically connecting electronic components by using conductive pathways. The process is very simple.motherboard is a printed circuit ,where all components of the system is connected.Printed circuit boards are used in nearly all electronic devices.The conducting wires that connect all the components, are printed onto an insulating plastic material such as paxolin or fiberglass. These tracks are commonly made of thin copper sheet stuck to the board. The tracks are then printed using light and a chemical process to remove the unwanted copper.Some boards used in remote controls and wafer thin boards used in ipods etc, are commonly printed, using conductive ink containing silver or carbon.The alternative to printed circuits was to idividually wire the coponents using wire and solder tags. Old tube radios were originally wired this way, but had to be made by hand.Printed circuits allow for automation and mass soldering using a float soldering process on a bed of molten solder.
