0
There are lamps on ships that are quite bright and are covered with venetian blind kind of shutters. The Navy uses this kind of contraption to communicate among shipsduring dark nights. They essentially use Morse Code and the seaman will operate a handle behind the shutters to open and close the lamp (that can be seen by other ships) to form the DOTs and DASHes and effect the communication. Watch the movie "Guns of Navarone" or such World War II movie and you seethese in use.
What else can I help you with?
What is visible light used for?
Visible light is used for various purposes such as lighting, photography, and communication. It is essential for vision and allows us to see colors and shapes. In technology, visible light is used in fiber optic communication and optical sensors.
What are the differences between infrared light and visible light?
Infrared light has longer wavelengths and is not visible to the human eye, while visible light has shorter wavelengths and is what we can see. Infrared light is often used for heat detection and communication, while visible light is what we perceive as colors.
In what ways are visible light waves used in everyday life?
Visible light waves are used in everyday life for various purposes, such as lighting, communication through optical fibers, photography, and remote controls.
Who have longer wavelengths visible light or radio waves?
The longest radio wave used for communication is around 3 millimeters long. The shortest visible wavelength of light is around 0.0004 millimeters long.
What are 3 examples of electromagnetic wave?
Radio waves, which are used for communication and broadcasting. Visible light, the portion of the electromagnetic spectrum that is visible to the human eye. X-rays, which are used for medical imaging and security screening.
What parts of the electromagnetic spectrum do you use the most?
We primarily use the visible light and radio waves parts of the electromagnetic spectrum. Visible light is essential for imaging and observation, while radio waves are widely used for communication and radar applications.
Has a longer wavelength than visible light can be used in cooking and communication with satellites?
Microwaves have a longer wavelength than visible light and are commonly used in cooking, as they are able to penetrate food and cause water molecules to vibrate, generating heat. Microwaves are also used in satellite communication to transmit signals due to their ability to travel through the Earth's atmosphere and interact with satellites in orbit.
What are five different types of waves in the electromagnetic spectrum?
Radio waves: Longest wavelength and lowest frequency, used for communication. Microwaves: Shorter than radio waves, used in cooking and communication. Infrared waves: Just beyond visible light, felt as heat, used in remote controls and thermal imaging. Visible light: The only part of the spectrum visible to humans, responsible for our sense of sight. X-rays: Higher energy waves used in medical imaging and security scanning.
Is visible light used for photosynthesis?
Yes,visible light is used. Frequencies of blue and red absorbed effectively
What is Microwave infrared and visible light?
Microwave, infrared, and visible light are all forms of electromagnetic radiation. Microwave has longer wavelengths and lower frequencies, often used for communication and cooking. Infrared has shorter wavelengths than microwaves and is commonly used in night vision technology. Visible light is the range of wavelengths that the human eye can detect, making it essential for vision and various technologies.
What are 3 uses for visible light?
Cones in our eyes are receivers for these tiny visible light waves. Light is used to see. In the form of lasers, light is used for recording data, or computer based manufacturing, or some types of surgery.
What are 3 common uses of visible light rays?
Visible light rays are commonly used in various applications, including illumination for homes and public spaces, enabling visibility and safety. They are also essential in photography and videography, capturing images through cameras that detect visible wavelengths. Additionally, visible light is utilized in communication technologies, such as fiber optics, where light signals transmit data over long distances.
