Science

Ultrasonic or Ultrasound The sound waves greater than 20,000 Hz is called ultrasonic sound. Humans cannot hear ultrasound and some animals can hear. Ex: Dogs, Deer etc. Ultrasonic whistles are used in vehicles such as cars to alert Deers that cross the roads. Ultrasonics has an important application in the medical field. It is used … Read more

The ear is a sensitive organ used to hear. It converts the pressure variations in the air with audible frequencies into electric signals sent through the auditory nerve to the brain. The outer ear is known as Pinna. Pinna collects the sound. Then it travels via the auditory canal. At the auditory canal end, there … Read more

Christian Doppler (1803-1853), observed that the sound received by a listener is different from the original frequency produced when there is relative motion between the source and the receiver. What is the doppler effect? That is whenever the listener or source moves the frequency is changed from the original. This is called the Doppler effect. … Read more

Soft Sounds The sound is of a low volume and has a uniform wave pattern that gives a soothing effect. Examples Music such as Piano, Guitar, flute etc. Sounds of birds Hissing of snakes Loudness The sound which is of high volume, that causes irritation and pain to the ears is called Loud Sounds. The … Read more

Reflection of Sound Waves Sound is reflected or bounced back like a ball when it hit any object. Laws of reflection of sound The angle of incidence is equal to the angle reflected for a sound. The direction of the incident sound, direction of reflected sound, and the normal all lie in the same plane. … Read more

Speed It is the distance traveled by sound waves per unit time through an elastic medium. Speed (v) = Distance/ Time If the distance traveled by one wave is taken together as one wavelength (λ), and therefore the time taken for this propagation is just one time period (T), Speed (v) = One Wavelength (λ) … Read more

Loudness Pitch Timbre Loudness and Intensity Loudness is a measure of which a sound can be differentiated from another one, that has the same frequency. Loudness or softness depends on the amplitude. Loud sound travels long-distance than as loudness or soundness is associate with higher energy. Sound decreases as we move away from the source … Read more

Nuclear energy produced by using a Nuclear Reactor is a power generation environment where a Control Nuclear Fission reaction is used to produce power. Nuclear energy, a powerful and relatively low-carbon source of electricity, is produced through a complex process known as nuclear fission. This process involves splitting the nuclei of atoms, usually uranium-235 or … Read more

Yes, a Nuclear reaction known as Nuclear Fusion reaction takes place in the Sun. The sun provides both heat and light energy. These two energy arises due to the Nuclear fusion reaction that happens inside the core of the Sun. This specific type of reaction that occurs insides the sun is called Proton-Proton Fusion Reaction. … Read more