an exceptionally intelligent person or someone with exceptional skill in a particular area of activity
genius
a substance used to make something such as wood, plastic or metal
material
a person who designs, builds, or maintains engines, machines, or structures
engineer
a sudden, dramatic, and important discovery or development
breakthrough
a scientific test in which you perform a series of actions and carefully observe their effects in order to learn about something
experiment
a notice or announcement to the public for promoting a product, service, event or a job
advertisement
a test of the ability, skill or strength of (someone or something) to be difficult enough to be interesting to (someone)
challenge
the activity of paying close attention to someone or something in order to get information
observation
the flow of tiny particles called electrons and protons
electricity
flow of something such as electricity occurring or existing in the present time
current
a device that does a physical task
machine
an answer to a problem or an explanation
solution