Suppose that intelligent life in other parts of the universe were able to perceive parts of the electromagnetic spectrum which are invisible to us. If such creatures used 1 to 2 meter radio waves, would they then be able to "see" our FM radio broadcasts? If they respond to radiation at those wavelengths, would you guess that these creatures were much larger or much smaller than us? Do you think they could they detect small objects, such as a penny?
Yes they can receive, they will be much larger , and they cant detect the penny.
Physics Lab Assignment This particular discovery is also an example of how those who deserve an award sadly are not always the ones who receive it. Read the following passage focusing your attention on the scientific procedures and scientific abilities you have been developing throughout the course. The discovery of pulsars –rotating neutron stars that generate regular pulses of radiation at their spin rate- was fortuitous. A group of astrophysicists from Cambridge University lead by Anthony Hewish was looking for...
The discovery of pulsars –rotating neutron stars that generate regular pulses of radiation at their spin rate- was fortuitous. A group of astrophysicists from Cambridge University lead by Anthony Hewish was looking for quasars (these are extremely bright, compact and remote objects that emit up to a thousand times as much light as our entire galaxy). For that purpose the research group designed a radio-telescope that was built on the flat fields surrounding Cambridge in central England. This telescope did...