The pitch of sound depends on Frequency. Pitch refers to the perceived highness or lowness of a sound, which correlates directly with its frequency. Higher frequencies create higher pitches, while lower frequencies produce lower pitches.
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The method used to ward off insects and harmful elements from homes is Ultrasonic wave. Ultrasonic devices emit high-frequency waves that are uncomfortable for pests like insects and rodents, encouraging them to leave the area. This technology is popular for ...
The phenomenon used to detect prey, predators, or obstacles is as Formation of pulses. Animals like bats use echolocation, emitting ultrasonic pulses and detecting their echoes to locate objects. This method allows for precise navigation and hunting in environments where ...
The first person to produce ultrasonic waves by whistling was Galton. Sir Francis Galton, a polymath and cousin of Charles Darwin, discovered ultrasonic waves in 1883 through his experiments with high-pitched whistles. His work laid the foundation for understanding and ...
Food cooks faster in a pressure cooker because the high pressure inside increases the boiling point of water, raising the cooking temperature. This higher temperature accelerates the cooking process, reducing the time needed to cook the food.
A white and smooth surface is a poor absorber of heat and a good reflector. It reflects most of the incoming light and heat, minimizing absorption and thus remaining cooler.
Air conditioners control both temperature and humidity, air coolers primarily cool the air through evaporation and do not effectively control humidity.
When sealed biscuits are kept inside the refrigerator, they become crispy because the humidity inside the refrigerator is generally low, which helps absorb excess moisture from the biscuits. This drying effect restores their crispiness.
Water has a higher heat capacity compared to a piece of iron, gold, or benzene. This means water can absorb more heat before its temperature rises significantly, making it an effective coolant and thermal buffer.
The heat required to convert a substance from liquid to gas without any temperature change is called latent heat of vaporization. This process occurs at the substance’s boiling point, where the liquid absorbs energy to overcome intermolecular forces and change ...