Sound and Acoustics Vocabulary

A set of vocabulary flashcards mapping Bengali physics terms related to sound and acoustics to their English terms and definitions.

Sound (শব্দ)

A mechanical wave that propagates through a medium and can be heard by an ear.

Acoustics (শব্দবিজ্ঞান)

The branch of physics that deals with the study of sound and sound waves.

Ultrasonic Wave (শব্দোত্তর তরঙ্গ)

Sound waves with frequencies above the upper audible limit of human hearing.

Infrasonic Wave (শব্দেতর তরঙ্গ)

Sound waves with frequencies below the lower audible limit of human hearing.

Speed of Sound (শব্দের বেগ)

The distance traveled per unit time by a sound wave as it propagates through an elastic medium.

Pitch of Sound (শব্দের তীক্ষ্ণতা)

The perceptual property of sound that allows its ordering on a frequency-related scale.

Intensity of Sound (শব্দের তীব্রতা)

The power carried by sound waves per unit area in a direction perpendicular to that area.

Quality or Timbre of Sound (শব্দের গুণ বা জাতি)

The characteristic tone color or quality of a sound that distinguishes different sound sources.

Echo (প্রতিধ্বনি)

A sound caused by the reflection of sound waves from a surface back to the listener.

Noise Pollution (শব্দ দূষণ)

The propagation of noise with harmful impact on the activity or health of human or animal life.

Limit of Audibility (শ্রাব্যতার সীমা)

The frequency range over which humans can hear sound, typically between $20\,Hz$ and $20000\,Hz$.

Audible Sound (শ্রাব্য শব্দ)

Sound falling within the frequency range that can be detected by the human ear.

Ultrasonic Technology (শব্দোত্তর প্রযুক্তি)

Technologies and applications utilizing ultrasound, such as medical ultrasonography or industrial testing.

Uses of Ultrasonic Waves (শব্দোত্তর তরঙ্গের ব্যবহার)

Practical applications of ultrasonic waves including medical imaging, cleaning, and flaw detection.

Uses of Echo (প্রতিধ্বনির ব্যবহার)

Practical uses of reflected sound waves, such as determining distance or depth in oceanography.

Medium of Sound Propagation (শব্দ বিস্তারের মাধ্যম)

The material substance (solid, liquid, or gas) required for sound waves to travel.

Longitudinal Wave (অনুদৈর্ঘ্য তরঙ্গ)

A wave in which the movement of the medium's particles is parallel to the direction of wave movement.

Transverse Wave (অনুপ্রস্থ তরঙ্গ)

A wave in which the movement of the medium's particles is perpendicular to the direction of wave movement.

Frequency (কম্পাঙ্ক)

The number of vibrations or wave cycles per unit time, measured in Hertz ($Hz$).

Time Period (পর্যায়কাল)

The time required for one complete cycle of vibration or wave oscillation.

Wavelength (তরঙ্গদৈর্ঘ্য)

The distance between consecutive identical points of a wave, such as crest to crest or compression to compression.

Wave Velocity (তরঙ্গবেগ)

The speed at which a wave front propagates through a medium.

Unit of Sound Intensity (শব্দের তীব্রতার একক)

The physical unit used to measure sound intensity, such as Watts per square meter ($W/m^2$) or decibels ($dB$).

Amplitude (বিস্তার)

The maximum displacement of points on a wave measured from its equilibrium position.

Humidity of Air (বায়ুর আর্দ্রতা)

The concentration of water vapor present in the air, which affects the speed of sound.

Temperature of Air (বায়ুর তাপমাত্রা)

The measure of thermal energy in air, which directly influences the velocity of sound waves.

Sensation of Hearing (শ্রবণ অনুভূতি)

The physiological sensory perception of sound vibrations by the auditory system.

Relation Between Speed of Sound and Air Temperature (শব্দের বেগ ও বায়ুর তাপমাত্রার সম্পর্ক)

The physical relationship where the speed of sound increases with an increase in air temperature.

Uses of Reflection of Sound (শব্দের প্রতিফলনের ব্যবহার)

Practical uses of sound reflection in instruments, architectural acoustics, and range detection.

SONAR (সোনার)

Sound Navigation and Ranging; a technique that uses sound propagation to navigate, communicate, or detect objects.

Sound Wave (শব্দ তরঙ্গ)

A pattern of disturbance caused by the movement of energy traveling through a medium as it propagates away from the source.

Pulsing of Sound (শব্দ স্পন্দন)

Periodic variation or pulsation in sound intensity or vibration.