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===Science and technology===

===Science and technology===

Many times you hear the word science and technology together. What is the connection between the two? Do you know? Study of science includes a method of observing things around us, thinking about why those events happen, recording information about the events, explaining why the events happen and also predicting what might happen. Often, scientists imagine what might be the solution and what might be the answer to the puzzles around us. The understanding of phenomena can lead to the development of tools – this is  what we call technology. The technology can provide us more methods of observing, experimenting and recording.  And this in turn results in the advancement of science.  Thus, science and technology share a symbiotic relationship.

Many times you hear the word science and technology together. What is the connection between the two? Do you know? Study of science includes a method of observing things around us, thinking about why those events happen, recording information about the events, explaining why the events happen and also predicting what might happen. Often, scientists imagine what might be the solution and what might be the answer to the puzzles around us. The understanding of phenomena can lead to the development of tools – this is  what we call technology. Technology can provide us more methods of observing, experimenting and recording.  And this in turn results in the advancement of science.  Thus, science and technology share a symbiotic relationship.

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Can you think of examples of where technology has helped the growth of science? One area is that of cell biology. Until the microscope was invented by Robert Hooke and Anthony Leeuwenhoek, the study of cells was not possible. Now we study structure of cells, growth of cells, disease-affected cells, cell reproduction, gene sequencing and [https://en.wikipedia.org/wiki/DNA DNA] using many advanced microscopes and cameras; the data and images are analysed using computers.

Can you think of examples of where technology has helped the growth of science? One area is that of cell biology. Until the microscope was invented by Robert Hooke and Anthony Leeuwenhoek, the study of cells was not possible. Now we study structure of cells, growth of cells, disease-affected cells, cell reproduction, gene sequencing and [https://en.wikipedia.org/wiki/DNA DNA] using many advanced microscopes and cameras; the data and images are analysed using computers.

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File:Robert-Hookes-microscope-287x300.jpg|First microscope designed by Robert Hooke

File:Robert-Hookes-microscope-287x300.jpg|First microscope designed by Robert Hooke

File:1Old-microscopes.jpg|Old Microscopes, 1750

File:1Old-microscopes.jpg|Old Microscopes, 1750

Many such analog devices were used for performing different calculation tasks like the ones shown below:       

Many such analog devices were used for performing different calculation tasks like the ones shown below:       

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File:South-pointing_chariot_(Science_Museum_model).jpg|Model for pointing out direction, China, 200-265

File:South-pointing_chariot_(Science_Museum_model).jpg|Model for pointing out direction, China, 200-265

File:Torquetum.jpg| Torquetum for astronomical instruments,{{nowrap|1100-1200}}

File:Torquetum.jpg| Torquetum for astronomical instruments,{{nowrap|1100-1200}}

===={{font color|purple|Think and write}}====

===={{font color|purple|Think and write}}====

Can you look at each of these pictures and think what might be the process by which analog computers work. Write down what they measured, how they may have measured, and how they gave results.

Can you look at each of these pictures and think what might be the process by which analog computers work? Write down what they measured, how they may have measured, and how they gave results.

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=====Radio communication=====

=====Radio communication=====

The earliest electronic communication devices functioned using radio technology. Many communication devices we know today also function through radio waves. Radio waves are [https://en.wikipedia.org/wiki/Electromagnetic_radiation electromagnetic waves].  Radio waves carry a certain amount of energy and can travel over large distances. When the wave reaches the destination, the receiver gets the amount of information. We cannot see radio waves but we can detect them by building receivers that can detect them. These are called as antennae. They scan the environment for radio signals and respond when they find a signal.  

The earliest electronic communication devices functioned using radio technology. Many communication devices we know today also function through radio waves. Radio waves are [https://en.wikipedia.org/wiki/Electromagnetic_radiation electromagnetic waves].  Radio waves carry a certain amount of energy and can travel over large distances. When the wave reaches the destination, the receiver gets the amount of information. We cannot see radio waves but we can detect them by building receivers that can detect them. These are called antennae. They scan the environment for radio signals and respond when they find a signal.  

You must be thinking if this is similar to how we hear sound.  Sound is a pressure wave – when we produce a sound it travels by disturbing the air particles. If there is no medium, sound cannot travel. What happens when we hear something on a radio?  Originally sound is produced and then it converted into radio waves. These waves are sent and received through instruments called antennae. When your radio antennae receives this radio wave, this is converted back into sound and is played.   

You must be thinking if this is similar to how we hear sound.  Sound is a pressure wave – when we produce a sound it travels by disturbing the air particles. If there is no medium, sound cannot travel. What happens when we hear something on a radio?  Originally sound is produced and then it converted into radio waves. These waves are sent and received through instruments called antennae. When your radio antennae receives this radio wave, this is converted back into sound and is played.   

One of the important parts of the cell phone is called the  SIM card.  The SIM card connects the phone to the network, your location. This helps the phone connect to a cell phone network and can also store phone numbers. It can be removed from one phone and put in any other cell phone.

One of the important parts of the cell phone is called the  SIM card.  The SIM card connects the phone to the network, your location. This helps the phone connect to a cell phone network and can also store phone numbers. It can be removed from one phone and put in any other cell phone.

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===References===

===References===

#[https://en.wikipedia.org/wiki/Analog_computer Analog computer]

#[https://en.wikipedia.org/wiki/Analog_computer Analog computer]

#[https://en.wikipedia.org/wiki/History_of_computing_hardware History of computing hardware]

#[https://en.wikipedia.org/wiki/History_of_computing_hardware History of computing hardware]