1) The document discusses different types of wave propagation including transverse waves, longitudinal waves, standing waves, interference, and the Doppler effect.
2) It provides examples of transverse wave propagation using a Slinky toy and explains concepts like constructive and destructive interference that result from the superposition of multiple waves.
3) The Doppler effect is defined as a change in the observed wavelength of light or sound when its source and observer are in relative motion, with the wavelength shifting to longer wavelengths during a redshift and to shorter wavelengths during a blueshift.
Light waves superimpose each other and the redistribution of energy due to this can be observed in terms of well defined patterns of maxima and minima. Wherein, maxima refers to more energy and minima refers to less energy. Diffraction can also be called as interference in secondary wavelets.
Light waves superimpose each other and the redistribution of energy due to this can be observed in terms of well defined patterns of maxima and minima. Wherein, maxima refers to more energy and minima refers to less energy. Diffraction can also be called as interference in secondary wavelets.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
CW RADAR, FMCW RADAR, FMCW ALTIMETER, AND THEIR PARAMETERSveerababupersonal22
It consists of cw radar and fmcw radar ,range measurement,if amplifier and fmcw altimeterThe CW radar operates using continuous wave transmission, while the FMCW radar employs frequency-modulated continuous wave technology. Range measurement is a crucial aspect of radar systems, providing information about the distance to a target. The IF amplifier plays a key role in signal processing, amplifying intermediate frequency signals for further analysis. The FMCW altimeter utilizes frequency-modulated continuous wave technology to accurately measure altitude above a reference point.
We have compiled the most important slides from each speaker's presentation. This year’s compilation, available for free, captures the key insights and contributions shared during the DfMAy 2024 conference.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
NUMERICAL SIMULATIONS OF HEAT AND MASS TRANSFER IN CONDENSING HEAT EXCHANGERS...ssuser7dcef0
Power plants release a large amount of water vapor into the
atmosphere through the stack. The flue gas can be a potential
source for obtaining much needed cooling water for a power
plant. If a power plant could recover and reuse a portion of this
moisture, it could reduce its total cooling water intake
requirement. One of the most practical way to recover water
from flue gas is to use a condensing heat exchanger. The power
plant could also recover latent heat due to condensation as well
as sensible heat due to lowering the flue gas exit temperature.
Additionally, harmful acids released from the stack can be
reduced in a condensing heat exchanger by acid condensation. reduced in a condensing heat exchanger by acid condensation.
Condensation of vapors in flue gas is a complicated
phenomenon since heat and mass transfer of water vapor and
various acids simultaneously occur in the presence of noncondensable
gases such as nitrogen and oxygen. Design of a
condenser depends on the knowledge and understanding of the
heat and mass transfer processes. A computer program for
numerical simulations of water (H2O) and sulfuric acid (H2SO4)
condensation in a flue gas condensing heat exchanger was
developed using MATLAB. Governing equations based on
mass and energy balances for the system were derived to
predict variables such as flue gas exit temperature, cooling
water outlet temperature, mole fraction and condensation rates
of water and sulfuric acid vapors. The equations were solved
using an iterative solution technique with calculations of heat
and mass transfer coefficients and physical properties.
1. UNIT-3
Propagation of energy
LP1: Transfer of energy-material medium:
Transverse wave
Longitudinal wave
standing wave
Interference
Doppler effect
2.
3.
4.
5.
6. Transverse waves
In transverse waves, each particle oscillates perpendicular to
the direction of propagation of the wave. There is no
horizontal movement.
Transverse waves can be modelled by moving one end of a
Slinky up and down. Each coil represents a particle.
source moves
up and down
direction of wave
propagation
coils vibrate
up and down
19. Terminology
• Phase Difference: The fractional part of a period which represents
the offset in peak positions of waves.
• Coherence: The existence of a correlation between the phases of two
or more waves such that interference effects can be observed.
• Interference: The variation with distance or time of the amplitude of
a wave which results from the superposition of two or more waves.
20.
21.
22. Constructive Interference
• The superposition of two waves is called interference.
• Constructive interference occurs when both waves are
positive and the total displacement of the medium is larger
than it would be for either wave separately.
23. Destructive Interference
• Destructive interference is when the displacement of the
medium where the waves overlap is less than it would be
due to either of the waves separately.
• During destructive interference, the energy of the wave is
in the form of kinetic energy of the medium.
24. Standing Waves
• Waves that are “trapped” and cannot travel in either direction are
called standing waves.
• Individual points on a string oscillate up and down, but the wave
itself does not travel.
• It is called a standing wave because the crests and troughs “stand in
place” as it oscillates.
25. Superposition Creates a Standing Wave
• As two sinusoidal waves of equal wavelength and amplitude travel in
opposite directions along a string, superposition will occur when the
waves interact.
26.
27.
28.
29. Doppler Effect
• “Along the line of sight” means the Doppler Effect happens only
if the object which is emitting light is moving towards you or
away from you.
• An object moving “side to side” or perpendicular, relative to your line
of sight, will not experience a Doppler Effect.
30. Doppler Effect
• When something which is giving off light moves
towards or away from you, the wavelength of the
emitted light is changed or shifted
V=0
31. Doppler Effect
• When the source of light is moving away from the observer the
wavelength of the emitted light will appear to increase. We
call this a “redshift”.
32. Doppler Effect
• When the source of light is moving towards the observer the
wavelength of the emitted light will appear to decrease. We call
this a “blueshift”.
33. Real Life Examples of Doppler Effect
•Doppler Radar (for weather)
•Airplane radar system
•Submarine radar system
Ok, anything with radar
•Radar gun, used by Law Enforcements Officers…
34. Doppler Shifts
• Redshift (to longer wavelengths): The source is moving away from the
observer
• Blueshift (to shorter wavelengths): The source is moving towards the
observer
Dl = wavelength shift
lo = wavelength if source is not moving
v = velocity of source
c = speed of light
c
v
0
l
l
D