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universe (big bang (the hour glass representation, the universe started…
universe
big bang
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the hour glass statement says that the first grain of sand to pass through the other side is the first particle at the beginning of the universe and time.
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x-ray
it can pass through soft tissue, skin, organs. but cannot pass through bones.
it illuminates bone and teeth so you can see an imperfections in bones, also known as broken bones.
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radio
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they can be used for communication too(broadcasting, radar, satellite.
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microwave
this radiation has many uses: communication( wifi, bluetooth, cellphones, gps).
navigation (GPS, radar, astronomy, heating)
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ultra violet
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it is what causes sun burns, not the sun itself
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infared
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it has many uses like thermal imaging, night vision, remote controls, seeing objects in space.
it is invisible to the human eye, but our skin can feel it
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