acid
bioelectricity
black
cable
campaign
charger
children
children school
closeup
color
concept
concert
connection
design
device
education
electrical wires
electrically
electronics
energy
equipment
experiments
fill
fresh
fruit
garnet
hands
laboratory
led
mango
music
nobody
object
pomegranate
positive
power
red
save
science lab
source
table
technology
template
test
turn on light
view
volt
wire
wires
wooden