its initial use to solve a triangulation problem in Ireland limelight was developed for lighthouses but failed. Nevertheless, limelight briefly demonstrated success in______ until replaced by electric light.     Stage lighting     Factory lighting     Replacing town gas lamps     Home lighting     Anti-aircraft

Q: brief notes on the following topics: a. optical fiber b. satellite communication

A: A) Definition Fiber optics is the technology used to transmit information as pulses of light through…

Q: Lithiograph Incandescent Light Bulb Direct electrical current 1. Nikola Tesla Wireless technology 2.…

A: Nikola Tesla invented the first alternating current (AC) motor and developed AC generation and…

Q: 2. List down the energy consumed and produced by a light bulb.

A: Bulb consume electric energy .

Q: A construction worker uses an electrical device to attract fallen nails and sharp objects from a…

A: Answer A magnetic wave radiating perpendicular to an electrical device

Q: If a current flows in the Satellite Tether shown , use Faraday’s law, Lenz’s law, and RHR-1 to show…

A:

Q: Which among the following is not a fundamental quantity? a. Luminous Intensity O b. Temperature O c.…

A: Definition of Fundamental quantity Fundamental quantities are those physical quantities which are…

Q: Luminous intensity is a derived quantity that is not directly measurable. Select one: True False

A: There are seven fundamental quantities: 1.Mass 2.Length  3.Time 4.Electric current  5.Temperature…

Q: Mineral-insulated cables are not used in. O computers O smoke control systems O alarm circuits O…

A: Mineral insulated cables are made using copper conductors put inside sheath of copper. Inorganic…

Q: A B D + 1. Bulb B will glow more brightly than A. Bulb D will glow the brightest than A and B. Bulb…

A:

Q: Compute the frequency (in MHz) of an EM wave with a wavelength of 4.6 in. (0.1168 m). Give your…

A: Given:wavelength, λ = 0.1168 mspeed of light, c = 3×108 m/s

Q: What is a spectrometer? What is the use of a spectrometer?

A: There is need of some instrument which helps us to see the spectrum or mixed spectral components.…

Q: A group of students were at a graduation party in one student's back yard. The star of the…

A: Given that some party lights are connected in series to each other.

Q: When a car is moved into a painting chamber, a mist of paint is sprayed around its body. When the…

A:

Q: A school classroom having a general dimension of 20 ft x 40 ft is to be lighted at an average…

A: The number of fixture is calculated by using the given expression below. Here, L, fc, A represent…

Q: Which one of the following is NOT a fundamental quantity? O a. Energy O b. Electric current OC.…

A: the question is that what is fundamental quantity?

Q: Light sensors are widely used in energy-efficient lighting control. List the three major types of…

A: Light sensor at the device is that convert light energy into electrical signal. The three different…

Q: 13) In a tabular form, compare the wire pair and the fibre optic as communication channels under the…

A: .

Q: The electrical domestic tube light gives white fluorescent light because of   A) colision between…

A: the electrical domestic tube light gives white fluorescent light because of falling of ultra violet…

Q: . Create a good label (name) for each signal described below: (a)*A sensor outputs a LOW when the…

A:

Q: A students were at a graduation party in one student's back yard. The star of the basketball teamwho…

A: The total voltage is drawn through the circuit of the party lights is the integer multiple of the…

Q: What is the wavelength of an EM wave with a frequency of 5.09x10^14 Hz? Express your answer in…

A:

Q: Cones are insensitive to long wavelengths in the light spectrum 1) True 2) False With explanation…

A: Three types of cones are there based on different pigment  S-cones M-cones L-cones.

Q: Imagine that you go to leave a room with an overhead light. The light is on. You move the wall…

A: Let a light is working in a room.  Once a person is about to leave the room, he / she tries to…

Q: Match each term related to EMR numbered above with a use of that phenomena listed below. Use each…

A: Required : EMR and the phenomenon.

Q: Object Material Observation copper Light bulb lights up rubber Light bulb does not light up aluminum…

A: As per the given question ,     Copper  Light bulb light up  rubber Light bulb does not light…

Q: Match each term related to EMR numbered above with a use of that phenomena listed below. Use each…

A: The spectral lines  exhibited by stars are either bright or dark. The elements within these stars…

Q: Give advantages and disadvantages of filament pyrometer.

A: Advantages of filament pyrometer are:

Q: What electrical conditions are required for two light globes to produce the same brightness?

A: The expression for the power,

Q: Instrument for measuring light intensity is called: A) Lucimeter B) Cryometer C) Cyanometer D)…

A: To measure the amount of light in a region, the instrument is used. The light meter is having a…

Q: What are the terminals of an incandesant lamp

A: The major components of an incandescent bulb are filament, two terminals, glass.

Q: 16. From the list below, select ALL that are examples of radiation: O electromagnetic waves O light…

A: radiation is energy transferred from one location to another location without any medium.

Q: What are the Safety and Importance of Electromagnetic Radiation

A:

Q: nvolves contact O nduction 1plarzation O gravily

A: Induction charging is a method used to charge an object without touching the object to any other…

Q: A group of students was at a graduation party in one student’s backyard.  The star of the basketball…

A:

Q: Light travels a distance of one mile in about 0.000005368. What is the estimated time written as a…

A: 0.000005368

Q: There are two lamps inside the spectrometer. Name both of them and what type of light does each one…

A: First lamp is Deuterium Lamp &  Second one is Tungsten Halogen Lamp

Q: write about of electromagnetic waves and related applications.

A:

Q: properties of the Electromagnetic waves given below: 1) EM waves are produced by 2) EM waves exert…

A:

Q: Why is the speed of an electric signal so much greater than the speed of sound?

A: Explanation:

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.