Today we amplified the difference between two voltages. We redesigned our solderless breadboards to match the schematic diagram that was drew on our activity sheet. We had to place three feedback transistors on the breadboard, and basically connect input V-A & input V-B to the amplifier to get the voltage. Today also, we had a lecture after lunch that explained to use about the limited amount of voltage, current, and power supply we basically can use. Mr. Jim also also told use what was the best kind of batteries to use, and the ones we were gonna use. Anyways tomorrow we have to meet in front on ECA to attend a tour of the Mary Perkins Cancer Center. We will be learning about medical physics and its application to human health and disease treatments. *Really looking foward to learning about the medical physics and different cancers that lives in human bodies.*