![]() However, it seems dark mode is more likely to affect sleep rhythm than eye strain. Studies on whether dark mode and other blue light filtering solutions work to mitigate blue light exposure are inconclusive. The American Academy of Ophthalmology (AAO) states that digital eye strain is caused by the way we use our digital devices, not necessarily the blue light that comes from them. These anecdotes about blue light and eyes aren’t necessarily backed by research or supported by expert opinion, though. The reduction in blue light may reduce any squinting or strain associated with high amounts of brightness. In theory, this is because default screen settings expose you to more blue light after dark, disrupting your circadian rhythm and suppressing melatonin, the hormone that signals your body that it’s bedtime.ĭark mode may also be easier to read, especially when you’re in a room with the lights off. People who promote dark mode sometimes claim that using it in the hours before bedtime helps them to fall asleep more quickly and stay asleep for longer periods of time. While we’re only now starting to understand the side effects of excessive blue light exposure from screens, you can imagine why it would start to confuse your eyes. These waves have more energy than other colors of light and send our brains the signal that it’s daytime. But blue light comes primarily from the sun, scatters into our atmosphere, and colors our sky blue. In motor racing, with the yellow diagonal stripe is used to warn drivers of an approaching car ready to overtake them.To understand whether dark mode has any health benefit, we first have to consider the way the blue light affects our eyes.īlue light waves are emitted from our screen devices. On the hoist side is a national ornamental pattern known as “Koshkar-muiz” in gold.īlue and yellow flags are not only limited to countries, cities or regions. The flag of Kazakhstan consists of a sky blue background and a gold sun with 32 rays above a golden eagle at the center. Palau has a simple flag featuring a light blue background which symbolizes the waters of the ocean and a yellow globe at the center of the flag representing the moon which is an important element in the lives of the Islanders. Palau in the Pacific also has a yellow and blue flag. Other states with blue and yellow flags include Oregon and South Dakota. The name “KANSAS” is printed below the seal. The flag of Kansas consists of a dark blue background with the state seal consisting of elements of different colors and sunflower over a bar of yellow and blue. The flag of Indiana consists of a dark blue background with gold or yellow torch surrounded by 13 outer stars and an inner semi-circle of 5 stars, and a star on top of the torch crowned with the word “Indiana". The flag of Alaska consists of eight yellow or gold stars arranged to form the Big Dipper with Polaris on a dark blue background. ![]() Several states in the US also have blue and yellow flags. Others include the flags of East Lothian (Scotland), Cheshire, County Durham (all in England), and Central Macedonia in Greece. The two colors on Sweden’s flag originated from the country national arms.Īpart from the two countries, certain cities and regions in Europe also have the blue and yellow flag including Opole city in Poland with yellow and blue horizontal striped flag and Asturias in Spain with yellow Cruz de la Victoria on a blue background. ![]() The flag of Sweden features a yellow Scandinavian cross on a blue background. The two Ukrainian colors are derived from the heraldry of the city of Lviv. The flag of Ukraine features two horizontal stripes a light blue on top of the yellow strip. In Europe, the most popular flags with blue and yellow are the Swedish and Ukrainian flags. Here are some well-known flags that feature blue and yellow: Europe Ukraine However, the color shade may vary from dark to light yellow/blue. Several national and regional flags are only made up of the two colors. Blue and yellow are some of the common colors on flags. Some have only two color combinations while others may have up to six colors (such as the flag of South Africa or the flag of South Sudan). Flags come in different color combinations. Flags With Blue and Yellow The flag of Ukraine features yellow (or gold) and blue.Ī flag is one of the most recognizable symbols that a country can have. ![]()
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