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Why is the luminous intensity and not the luminous flux specified for reflector lamps?
The luminous intensity is specified for reflector lamps because it measures the amount of light emitted in a specific direction, which is important for directional lighting applications such as spotlights and floodlights. Reflectors are designed to control and direct light in a specific direction, so specifying luminous intensity helps to ensure that the lamp is suitable for its intended purpose. Luminous flux, on the other hand, measures the total amount of visible light emitted by a source in all directions, which may not be as relevant for reflector lamps where the focus is on directing light in a specific direction.
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Why do stars twinkle?
Stars twinkle because of the Earth's atmosphere. When starlight enters the Earth's atmosphere, it passes through layers of varying temperature and density, causing the light to refract or bend. This bending of light creates the twinkling effect that we see from the ground. The movement of air pockets in the atmosphere constantly changes the path of the starlight, leading to the twinkling appearance of stars.
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How do stars twinkle?
Stars appear to twinkle because of the Earth's atmosphere. As the light from a star passes through the atmosphere, it is refracted or bent in different directions by the varying density of the air. This causes the apparent position of the star to shift slightly, creating the twinkling effect. The twinkling is more noticeable when the star is low on the horizon, as the light has to pass through a greater thickness of atmosphere.
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Is the blurb for The Shimmer Rider good?
Yes, the blurb for The Shimmer Rider is good. It effectively sets the tone for the story by introducing the main character, providing a glimpse into the futuristic world, and hinting at the challenges and adventures that await. The blurb also creates intrigue by mentioning a mysterious power and a dangerous mission, making the reader curious to learn more about the protagonist and their journey.
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Which radiant heaters are suitable for the garage?
Infrared radiant heaters are suitable for the garage as they provide direct, targeted heat to specific areas. Electric infrared heaters are a good option for smaller garages, as they are easy to install and operate. For larger garages, a gas-fired infrared heater may be more efficient and cost-effective. It's important to consider the size of the garage, the insulation, and the intended use when choosing the right radiant heater for the space.
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Does anyone know of another version of "Twinkle, Twinkle, Little Star" in German?
Yes, there is another version of "Twinkle, Twinkle, Little Star" in German called "Morgen kommt der Weihnachtsmann." This version is a popular German Christmas song that uses the same melody as "Twinkle, Twinkle, Little Star" but with different lyrics. It is often sung during the holiday season in Germany.
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Can one exchange glowing pearls for a radiant diamond?
No, glowing pearls and radiant diamonds are two different types of gemstones with distinct characteristics and values. Pearls are organic gemstones formed inside oysters, while diamonds are precious stones formed deep within the Earth. The value and rarity of a radiant diamond far exceed that of glowing pearls, making it unlikely for a direct exchange to occur between the two.
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Why do bananas sparkle?
Bananas do not actually sparkle. The appearance of bananas may give the illusion of sparkling due to the natural waxy coating on their skin, which can catch and reflect light. This can create a shimmering effect, especially when the fruit is placed under direct light. However, this is not actual sparkling, but rather a play of light on the surface of the banana.
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