<span>Social media has both helped to strengthen our relationships and make us more disconnected than ever. We share every minute detail of our lives through these websites, but often fall short when it comes to maintaining physical social interactions. One great thing social networking has done is get us in touch with people all over the world.</span>
It is free to the buyer because he does not have to pay for the second product, but it is not free to society because the cost to produce the product including the labors, materials, machines, and electricity cost go unpaid.
Explanation:
(x2) 741 OpAmps (Radioshack Catalog #: 276-007)
(x1) 9V Relay (Radioshack Catalog #: 275-005)
(xvar) jumper wires (Radioshack Catalog #: 276-102)
(x2) Heavy duty 9V battery clips (Radioshack Catalog #: 270-324)
(x2) 9V batteries (Radioshack Catalog #: 23-866)
(x1) Prototyping PCB (Radioshack Catalog #: 276-170)
(x1) Piezo Buzzer (Radioshack Catalog #: 273-080)
(x1) 5K Ohm Potentiometer (Radioshack Catalog #: 271-1714)
(x1) Potentiometer cap (Radioshack Catalog #: 274-415)
(x1) 470 Ohm Resistor (Radioshack Catalog #: 271-1317)
(x1) 3" diameter acrylic tube
(x1) Magnet (Radioshack Catalog #: 64-1888)
(xvar) lamp-pull ball-chain
Tools:
Solder
Soldering Iron
Wire Snips
Hot Glue Gun
I used a laser cutter to make my own personal enclosure, but one could easily modify a pre-made project enclosure to suit the needs of this project.
Fraternal twins typically happen when two fertilized eggs are rooted in the uterus wall at the same period or time. When two eggs are individualistically fertilized by two different sperm cells, fraternal twins is the end outcome. The two eggs form two zygotes, therefore the terms dizygotic and biovular. Fraternal twins are, fundamentally, two normal siblings who come about to be born at the same time, since they arise from two separate eggs fertilized by two separate sperm, just like normal siblings.
