The human eye can only see visible light, but light comes in many other “colors”—radio, infrared, ultraviolet, X-ray, and gamma-ray—that are invisible to the naked eye. On one end of the spectrum there is infrared light, which, while too red for humans to see, is all around us and even emitted from our bodies.

All electromagnetic radiation except visible light (a very narrow band) is invisible. Invisible radiation includes radio waves, infrared, UV, microwaves, and gamma radiation. In addition, alpha and beta radiation as well as “”cathode rays” – all of which are streams of particles – are invisible.

We often use visible light images to see clouds and to help predict the weather. We not only look at the Earth from space but we can also look at other planets from space.

Electromagnetic waves are invisible forms of energy that travel though the universe. However, you can “see” some of the results of this energy. The light that our eyes can see is actually part of the electromagnetic spectrum.

If you could see infrared light, you would see a world of temperature—not color. Any object that has a temperature radiates in the infrared part of the spectrum (even ice). The hottest objects would appear brightest, so the sun will still be at the top of the list.

Infrared waves are a portion of the light spectrum that follows red. They have longer wavelengths than visible light, ranging from 700 nanometers to one millimeter. This renders them invisible to humans in almost all conditions.

Seeing distances Based on the curve of the Earth: Standing on a flat surface with your eyes about 5 feet off the ground, the farthest edge that you can see is about 3 miles away.

aThe human eye can see light with wavelengths between 380 and 700 nanometers. cMost humans cannot see ultraviolet light because it has a shorter wavelength than violet light, putting it outside of the visible spectrum.

Red-green and yellow-blue are the so-called “forbidden colors.” Composed of pairs of hues whose light frequencies automatically cancel each other out in the human eye, they’re supposed to be impossible to see simultaneously. The limitation results from the way we perceive color in the first place.

Blue

Vantablack is known as the darkest man made pigment. The color, which absorbs almost 100 percent of visible light, was invented by Surrey Nanosystems for space exploration purposes. The special production process and unavailability of vantablack to the general public makes it the rarest color ever.

What Is the Rarest Eye Color? Green is the rarest eye color of the more common colors. Outside of a few exceptions, nearly everyone has eyes that are brown, blue, green or somewhere in between. Other colors like gray or hazel are less common.

Pantone 448 C

YInMn blue is so bright and perfect that it almost doesn’t look real. It’s the non-toxic version of the world’s most popular favorite color: blue. Some people are calling this hue the best color in the world.

Pantone 448 C, also referred to as “the ugliest colour in the world”, is a colour in the Pantone colour system. Described as a “drab dark brown”, it was selected in 2012 as the colour for plain tobacco and cigarette packaging in Australia, after market researchers determined that it was the least attractive colour.

green

8 colors that should never be combined

• Brown and black. Brown and black are two dark colors that should never be combined in our clothes because it will not shine.
• Gray and Brown. Yes, it is bad.
• Blue and black.
• Red and Green.
• Green and pink.
• Green and orange.
• Purple and Yellow.
• Red and Orange.

Origins suggested on a couple of forums… Sailors thought it was bad luck to paint a boat green, as it couldn’t be seen easily against the blue water if it capsized. Blue and green are too similar to be easily distinguished in black and white film.

For example purple and yellow are opposite each other, as are blue and orange. These combinations are what people often call a colour clash, as they are bright, but they DO go together and create a great scheme.

50 Fashion Rules to Break Right Now

• Red and pink clash.
• Don’t wear white after labor day.
• Don’t wear white shoes after labor day.
• Take off one accessory before leaving the house.
• Navy and black don’t go together.
• Shorts are only for summer.
• Mixed prints are too busy.
• You have to wear silver or gold jewelry, not both.

Three-Color Logo Combinations

• Beige, Brown, Dark Brown: Warm and Reliable.
• Blue, Yellow, Green: Youthful and Wise.
• Dark Blue, Turquoise, Beige: Confident and Creative.
• Blue, Red, Yellow: Funky and Radiant.
• Light Pink, Hot Pink, Maroon: Friendly and Innocent.
• Navy, Yellow, Beige: Professional and Optimistic.

Our Top 5 Color Combinations

• Red and yellow. Red and yellow are a classic, bold color combo.
• Pink and purple. Pink and purple are warm, playful colors.
• Yellow and black. Yellow and black can be lighthearted (think of the classic smiley face) or more serious.
• Purple and Orange.
• Green and Blue.

Yes, You Can Wear Navy and Black Together The Summer Contrary to popular notions, black and navy are easy to wear in warmer climates.

Can you wear black shoes with a navy suit or, in this case, pants? Of course! There’s nothing more classic than a pair of blue or navy pants styled with black shoes. Blue pants are classic, black shoes are classic, and when brought together the two create a refined, polished look.

Light brown is an acceptable color shoe to wear with navy trousers, though our preference is for a darker brown. Your navy trousers will still look good with these shoes, just make sure your belt or suspenders coordinate well.

Can you wear navy and black together? You sure can. In fact, it’s my favorite color combination.

As for shoes, you can ignore that old “navy and black don’t mix” rule once and for all: Pairing your dress with black heels makes a flattering, sophisticated statement. Other footwear options: silver and gold (which really do go with everything), or a matching navy, which feels fresh.

Black-shaded hues like dusty purple, hunter green, and maroon share navy’s intensity and are likely to fade when paired with the dark-blue hue. Luckily, you’ll find plenty of colors, including mustard yellow, bright pink, cherry red, and even metallic gold, that go beautifully with navy blue.

Black and royal blue work as a combination when you can clearly see the difference between the two colours from a distance. Royal Blue is a classic colour: so combines well with classic black. The combination is unusual enough to always look smart in whatever situation you wear it.