1) The document discusses the dual nature of matter and light, explaining that light has both wave-like and particle-like properties, as demonstrated through the photoelectric effect.
2) It introduces Einstein's photoelectric equation, which relates the maximum kinetic energy of emitted electrons to the photon energy of the incident light according to the conservation of energy.
3) Experiments by Davison and Germer are discussed, in which they observed the diffraction of electrons fired at a crystal, providing evidence that matter also exhibits wave-like properties as described by the de Broglie hypothesis of matter waves.
Describes electrostatic principles and concepts.
**More good stuff available at:
www.wsautter.com
and
http://www.youtube.com/results?search_query=wnsautter&aq=f
Describes electrostatic principles and concepts.
**More good stuff available at:
www.wsautter.com
and
http://www.youtube.com/results?search_query=wnsautter&aq=f
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
State of ICS and IoT Cyber Threat Landscape Report 2024 previewPrayukth K V
The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
2. CONCEPTS
PHOTO ELECTRIC EFFECT – discovered by Hertz
1887. It involves conversion of light energy into
electrical energy.
EINSTEIN PHOTO ELECTRIC EQUATION –
PARTICLE NATURE OF LIGHT. It is in accordance
with Law of conservation of energy . Max. KE =
photon energy – work energy
3. MATTER
WAVES- wave energy of particles.
The waves associated with the moving
particles are called matter waves also called
De Broglie waves .
Interference
, Diffraction , and Polarization
theories explain the wave nature of particles.
4. Action
PHOTO
CELL – It is technological
application of photoelectric effect . It
converts light energy into electrical energy.
DE
BROGLIE RELATION – De broglie
proposed the wavelength associated with a
particle of momentum P is given by
wavelenght=h/mv
5. DAVISON
AND GERMER EXPERIMENT –
Wave nature of electrons was experimentally
verified by Davison and Germer on 1928.
They observed diffraction effect with beam of
electrons scattered by a crystal. Both of them
shared Nobel Prize in 1937 for their
experimental discovery.
6. IMPORTANT POINTS
The
minimum energy needed by an electron
to come out from a metal surface is called
work function of the metal .Energy (greater
then the work function required for electron
emission from the metal surface can be
supplied by suitable heating or applying
strong electric field or irradiation it by light of
suitable frequency.
7.
Photoelectric effect is the phenomenon of electron
by metals when illuminated by light of suitable
frequency. Certain metals respond to ultraviolet light
while others are sensitive even to the visible light.
Photoelectric effect involves conversion of energy It
follows the law of conservation of energy. The
photoelectric emission is an instantaneous process
and possesses certain special features.
9.
The potential difference applied between the two
electrodesI3>I2>I1
photo
I2
I3
current
I1
Stopping pot.
retarding pot.
Collector plate pot.
10.
Effect of frequency of incident radiation on stopping potentialphoto
current
Vo’> Vo’’ > Vo’’’
stopping pot
(Vo)
Vo’
retarding pot.
Vo’’ Vo’’’
0
collector plate
11.
The stopping potential (Vo) depends on –
The frequency of incident light.
The nature of the emitter material. The stopping
potential is directly related to the max. kinetic energy
of emitted of electrons emitted :
eVo = 1/2mv²
max= kmax
Below a certain frequency , characteristic of the
metal, no photoelectric emission takes place .
12. Einstein’s
photoelectric equation is in
accordance with the energy conservation law
as applied to the photon absorption by an
electron in the metal. The max. kinetic
energy (½)mv²max is equal to the photon
energy (hv) minus the work function of the
target metal –
½mv²max =voe =hv =h(v-vo)
13.
The classical wave theory could not explain the main
features of photoelectric effect . Its picture of
continuous absorption of energy from radiation could
not explain the independence of KMAX on intensity,
the existence of Vo and the instantaneous nature of
the process. Einstein explained these features on
the basis of photon picture of light . Acc. To this ,
light is composed of discrete packets of energy and
momentum , which depend on the frequency of
incident light and not on its intensity . Photoelectric
emission from the metal surface occurs due to
absorption of a photon by an electron.
14. The
de Broglie wavelength associated with a
moving particle is related to its momentum p
as /p. The dualism of matter is inherent in
the de Broglie wavelength which contains a
wave concept and a particle concept. The de
Broglie wavelength is independent of the
charge and the nature of the material
particle.
15. Electron
diffraction experiments by Davisson
and Germer , and by G.P . Thomson , as well
as many experiments , have verified and
confirmed the wave nature of electrons. The
de Broglie hypothesis of matter waves
supports the Bohr’s concepts of stationary
orbits.