or scatter it (like molecules of the gases in the atmosphere)Īs the white light from the Sun enters Earth’s atmosphere, much of the red, yellow, and green wavelengths of light (mixed together and still nearly white) pass straight through the atmosphere to our eyes.A human hair is about 50,000 nanometers thick! So these visible light wavelengths are very, very tiny.Īnother important thing to know about light is that it travels in a straight line unless something gets in the way to A red light wave is about 750 nanometers, while a blue or violet wave is about 400 nanometers. The wavelengths in this picture are not to scale. The shortest wavelengths we can see look blue or violet. The longest wavelengths we can see look red to us. Visible light includes the wavelengths our eyes can see. What makes one kind of light different from others is its wavelength - or range of wavelengths. Raindrops act as tiny prisms when lit by the Sun, bending light and separating it into its different colors.īut why are there different colors? The light you see is just one tiny bit of all the kinds of light energy beaming around the Universe - and around you! Like energy passing through the ocean, light energy travels in waves, too. We see all those colors when we look at rainbows. The white light coming from the Sun is really made up of all the colors of the rainbow. They aren’t! Of all the colors of the rainbow, why blue?Ĭouldn’t the sky just as easily be green? Or yellow? When we see a rainbow, we do see green and yellow in the sky, as well as blue, violet, orange, yellow, red, and everything in between. It’s so obvious that the sky is blue, you might think the reasons would be just as obvious. Like most curious people, you have probably asked at some time, “Why is the sky blue?” Or if you saw a beautiful sunset or sunrise, you might have asked, “Why is the sky red?” Make sure the tape is sitting comfortably, this is how the hat will sit on your head.Click above to watch this video about why the sky is blue! Voiceover provided by NASA scientist Dr. About 5 mm above your ears and position it at the top of your forehead (beginning of hairline). Bring the tape measure around to the front of your head. Choose this option if this is the way you will choose to wear your hat.Ģ. This is the “halo” style of wearing a hat. If in between sizing, we recommend sizing up and adding a hat filler to your order to tailor the hat to fit your head perfectly. Check what size your measuring tape says. Make sure the tape is sitting comfortably, this is how the hat will sit on your head.ģ. About 5 mm above your ears and position it in the centre of your forehead, or just above the eyebrows (depending on where you want your hat to sit). Bring the measure around to the front of your head. Place your cloth measuring tape around your head over your occipital bone (the furthest part on the back of your head).Ģ. Choose this option if this is the way you will choose to wear your hat.ġ. This is the “traditional” style of wearing a hat. How would you like to wear your hat? Select from the options listed below and follow the instructions of your preferred option to measure your head.īe sure to follow the instructions of your preferred option, there are significant differences between them. We also recommend you have assistance from another person, to ensure accuracy.Īll Lack of Color hats are sized in centimetres, as such we recommend using a metric ruler and measuring your head in CM. To measure your head accurately, you will need a cloth measuring tape. We have a few simple tips to help you find the perfect sized hat for YOU. Use our size guide as well as the size & fit section of your desired hat to find your perfect fit. Each Lack of Color piece is thoughtfully designed so each shape and silhouette will vary slightly in how it fits.
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