You may have heard many sounds in the environment. Some of them are sounds of animals, human voices, noise of horns etc. But have you ever wondered how these sounds produce? So let’s study about that. How sounds produce? Sound is produced by vibrating something. The objects that produce sound are called sources of […]
The structural unit of nervous tissue is “Neuron”. The function of the neuron is to transmit impulses. Accordingly nerve cell can be divide into three types as Sensory neuron, Inter neuron and Motor neuron. Sensory neuron transmit impulses from sensory organs to central nervous system and Motor neuron transmit impulses from central nervous system […]
Bats make use of ultrasound (above 20000 Hz) waves to fly avoiding barriers. They emit ultrasound while flying. These waves are reflected back if they face a barrier. When a bat receives the reflected waves it can judge the position of the barriers and fly avoiding them.
Human hearing range describes the range of frequencies that can be heard by humans. Accordingly humans can detect sounds in a frequency range from about 20 Hz to 20000 Hz. Humans are most sensitive to frequencies between 2,000 and 5,000 Hz. And also sounds we can’t hear that is below 20 Hz (Infra-sound) and above […]
With the advancement of the technology, computer has become a convenient tool for everyone. Once, man used to process data using a pen, pencil or other devices. But today the computer has become man’s data processor and it is an indispensable tool for him. So let’s analyze the fundamentals of a computer system in depth. […]
ICT has bridged access to information from anywhere anytime which improves information dissemination around the world. As a result the world has become a global village. Hence everyone should have an idea of ICT to come up with the technology. So let’s go through the basic concepts of ICT. Concept of ICT This section will […]
