If you mean how far. If you can see the stars in the Milky Way - that is about how far we can see.
Radio waves are too long for the human eye to see. The light that is visible to the human eye consists of a small portion of the electromagnetic spectrum. Radio waves have wavelengths longer than visible light, making them invisible to the naked eye.
microeconomist
A microbiologist.
A microbiologist.
Wavelengths that are too short, such as ultraviolet and X-rays, or too long, such as infrared and radio waves, are invisible to the human eye. The visible spectrum for humans typically ranges from about 400 to 700 nanometers.
A stethoscope
A microbiologist.
A microbiologist would study living organisms that are too small to see with the naked human eye. They study microorganisms such as bacteria, viruses, fungi, and protozoa.
I looked it up in my physics text book and it says that the wavelength is too long to be seen by the human eye.
It's either microeconomist or microbiologist.
A microscope.
Yes, the human eye can estimate speed by perceiving changes in an object's size, distance, and position over time. However, this estimation may not always be accurate and can be influenced by factors like lighting conditions and distractions.