Telegraph/telephone wire.
A transmitometer is an instrument used to measure the transmission of electromagnetic signals, particularly in relation to weather conditions such as fog or smoke. It works by sending and receiving signals to determine visibility and the presence of particles in the air that could disrupt the signal.
A sword is commonly used as a weapon for both attack and defense in battle. Swords have been used for centuries as a versatile and effective tool for combat, offering the ability to both strike and block incoming attacks.
A hydrophone is the instrument commonly used to measure sound underwater. It works by converting sound waves into electrical signals that can then be analyzed and recorded. It is a vital tool in various fields like oceanography, marine biology, and underwater acoustics.
A telephone is an instrument that sends voices using electricity. Sound waves are converted into electrical signals, transmitted through wires or wireless networks, and then converted back into sound at the receiving end, allowing people to communicate over long distances in real time.
Drums and bugles were commonly used for signaling during battles. Drums were used for conveying commands, rallying troops, and setting marching pace, while bugles were used for specific signals such as calls to charge or retreat. These instruments were crucial for maintaining order and communication on the battlefield.
A microphone is an instrument used to capture and magnify sound by converting sound waves into electrical signals.
Analog instrument are interface with digital instrument with the help of analog to digital converter(ADC).ADC converts analog signals to digital signals.
an oscilloscope
They used the transmitted to transmit the signals from the island they were stuck in. Transmitter here is an electronic instrument.
Aerophone
Aerophone
Aerophone
Bugle
NAICS 334515 applies to Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals.
brass woodwind string or percussion
cornu
A thermostat is commonly used to control a furnace. It measures the temperature in the room and signals the furnace to turn on or off to maintain a set temperature.