lasers
Coherent sources are sources of waves that have a constant phase difference between them. An example of coherent sources is two identical lasers emitting light waves with the same frequency and wavelength.
differentiate general reference sources and special reference sources with example
battery
primary sources
"In Good Hands" is an example of a catchy slogan on conventional sources. "American By Birth Rebel By Choice" is an example of the non-convectional sources slogan.
A light bulb is one example.
energy sources: fossil fuels chemistry: alkanes
primary sources
Using data from a number of sources to come to a conclusion
water, air, brain power, plant life.
This is an example of information derived from secondary sources.
"Relying on renewable energy sources can help reduce greenhouse gas emissions." This statement is not an example of the use of natural resources; instead, it focuses on the environmental impact of utilizing renewable energy sources.