we see things when a light source goes into our eyes or when it reflects off an object
Objects are visible to us only if light is reflected off of the object. We cant see anything without light.
the objects which are not clearly visible
a microscope
Infrared radiation or light is part of the electromagnetic spectrum and acts the same as visible light does.Infrared can be absorbed and reflected by objects much the same way as visible light. More on Infrared:Some black objects that absorb visible light radiation may reflect infrared.Much of the absorbed visible light energy is re-emitted as infrared up to many hours later.There are subcategories of infrared, two common ones are near-infrared and far-infrared. Near being closer to visible light.
illuminatedThats the right answer for a plus.
Light, for humans "visible light" which is a form of electromagnetic radiation with a relatively wide range of wavelengths. The absorption or reflection of the various wavelengths of light by objects are what define their color.
objects are visible to us only when?
Some visible objects in the sky could be faces and shapes.
Illuminated objects
Objects that are further away stay visible for a longer period of time.
Illuminated objects
the objects which are not clearly visible
Those objects would be too cold to emit significant amounts of visible light.
The microscope makes transparent objects visible to enable study.
They reflect and scatter visible light that comes from an external source.
A telescope. :-)
Because they still absorb and scatter some light.
microscope