際際滷s from my TEDxAlbany talk, December 3, 2015. The topic was showing the was that quantum-mechanical phenomena show up in mundane morning activities like making toast, waking to an alarm, and checking social media.
Talking Dogs and Galileian Blogs: Social Media for Communicating ScienceChad Orzel
油
際際滷s from my Forman Lecture talk at Vanderbilt University 3/26/15. Arguing that the current state of the world demands greater engagement with a broader public on the part of scientists, and that social media can be a powerful tool for this. Including discussion of pros and cons of specific platforms, and advice based on 12+ years of talking science on the Internet, sometimes with my dog.
High Precision, Not High Energy: Using Atomic Physics to Look Beyond the Stan...Chad Orzel
油
Second of two lectures on using atomic physics techniques to look for exotic physics, given at the Nordita Workshop for Science Writers on Quantum Theory. This one focusses on the measuring of tiny frequency shifts using techniques developed for atomic clocks.
Talk for the Bristol (UK) Festival of Ideas on similarities between everyday activities like crosswords, card games, and sports and the process of scientific discovery.
際際滷s for a talk given at Physics Day at Space Center Houston, May 1-2 2014. Explains why nothing can move faster than the speed of light using spacetime diagrams.
Lecture slides for a class giving a historical overview of quantum mechanics, including black-body radiation, the photoelectric effect, and the Bohr model of hydrogen. Used in a class for non-majors titled "A Brief History of Timekeeping," as a lead-in to talking about atomic clocks.
Lecture slides from a class on atomic clocks, giving an overview of the basic idea and some of the history leading up to modern laser-cooled cesium fountain clocks. Given as part of a class for non-majors titled "A Brief History of Timekeeping."
Lecture slides from a class introducing quantum mechanics to non-majors, giving an overview of black-body radiation, the photoelectric effect, and the Bohr model. Used as part of a course titled "A Brief history of Timekeeping," as a lead-in to talking about atomic clocks
What's So Interesting About AMO Phyiscs?Chad Orzel
油
A talk given at the 2011 meeting of the Division of Atomic, Molecular, and Optical Physics (DAMOP) of the American Physical Society, summarizing recent and exciting results in AMO physics being presented at the meeting.
What Physics Knowledge Is Assessed in TIMSS Advanced 2008?Chad Orzel
油
The document discusses the content assessed in the 2008 TIMSS Advanced physics assessment and compares it to introductory college physics courses and state high school physics standards in the US. It finds that the TIMSS assessment covered similar core topics as introductory college physics, with a focus on mechanics, electricity and magnetism, and atomic and nuclear physics. However, coverage of some topics like thermodynamics was more limited than in college courses or state standards.
What Every Dog Should Know About Quantum PhysicsChad Orzel
油
1) Quantum physics describes the behavior of matter and light at the microscopic scale and has led to over 20 Nobel Prizes.
2) Quantum effects underlie modern technologies like computers, fiber optic communications, and how the sun generates energy through nuclear fusion.
3) Key concepts in quantum physics include wavefunctions, allowed quantum states, the probabilistic nature of measurements, and the paradox that objects exist in multiple states simultaneously until observed.
Talking to My Dog About Science: Why Public Communication of Science Matters ...Chad Orzel
油
Scientists need to better communicate science to the public to increase science literacy and build support. Blogs provide an easy way for scientists to engage the public in an accessible way on various science topics. By using blogs, scientists can help address the disconnect between science and the public while gaining experience communicating complex ideas simply.
What Every Dog Should Know About Quantum PhysicsChad Orzel
油
A talk on the essential elements of quantum mechanics, given to a group of Albany area home-schooled students and parents. The second slide is a video of a dramatic reading of Chapter 3 of _How to Teach Physics to Your Dog_ (Scribner, 2009, available wherever books are sold); the video can be found on YouTube.
Lasers in the Undergraduate Laboratory: Precision Measurement for the MassesChad Orzel
油
This document discusses how lasers can be used in undergraduate laboratories to teach precision measurement techniques. It provides a brief history of lasers and their applications in medicine, industry, and science. Specifically, it describes how three "cheap and easy" laser experiments - measuring the speed of light, measuring the index of refraction of air, and laser spectroscopy of rubidium - can introduce students to real precision measurement techniques like lunar laser ranging, LIGO, and atomic clocks. It argues that while undergraduate experiments can't achieve the same precision as professional labs, they can provide students with the basic concepts. Resources for setting up these experiments are also provided.
Talking to My Dog About Science: Why Public Communication of Science Matters ...Chad Orzel
油
This document discusses the importance of public communication of science and how blogs can help with this effort. It notes that science literacy among the public is low. While most people support funding of science, it is not a high priority. The document argues that scientists have failed at communicating with the public. It outlines a history of scientific publication and promotion, favoring a more accessible "Galilean" style over technical "Newtonian" publications. The document advocates using blogs to help humanize scientists and promote understanding of science in an accessible way. It provides examples of successful science blogs and how they have helped spread scientific knowledge.
From Stonehenge to NIST F1 provides a brief history of timekeeping. It discusses early astronomical clocks based on the earth's orbit and rotation. It then describes the development of pendulum clocks in the 17th century and John Harrison's sea clocks in the 18th century. Quartz oscillators were developed in the 1920s providing more accurate timekeeping. Atomic clocks were developed in the 1950s using the vibration of cesium atoms as the most accurate clock yet, losing only 1 second every 20-30 million years. Precise timekeeping from atomic clocks is necessary for applications like global positioning systems.
Quantum Physics for Dogs: Many Worlds, Many Treats?Chad Orzel
油
The document discusses interpretations of quantum mechanics, specifically the Copenhagen interpretation and the Many-Worlds interpretation. It explains that under the Copenhagen interpretation, measurement causes the quantum wavefunction to collapse, while under the Many-Worlds interpretation, the wavefunction never collapses and instead continuously splits the universe into many branches. Decoherence helps explain why we only observe single states despite the continuous splitting, as interactions with the environment make the effects of other branches undetectable. The document also notes challenges with both interpretations and how the combination of Many-Worlds and decoherence addresses these challenges.
The document discusses quantum teleportation as a method for transmitting the exact quantum state of a particle to a distant location. It involves:
1) Creating an entangled pair of particles to use as a resource.
2) Performing a joint measurement on the particle with the state to transmit and one particle from the entangled pair, entangling them.
3) Transmitting the measurement result classically to allow reconstructing the original state in the other particle from the entangled pair.
This document discusses using atom trap trace analysis (ATTA) to measure krypton contamination in rare gases like neon and xenon. ATTA can trap and detect individual krypton atoms, allowing measurement of krypton abundance down to levels of 10-14 in only 3 hours. This high sensitivity and fast measurement makes ATTA a useful technique for evaluating krypton backgrounds in rare gas detectors for neutrinos and complementing gas purification efforts for next-generation neutrino experiments.
"Squeezed States in Bose-Einstein Condensate"Chad Orzel
油
1. The document discusses the formation of squeezed quantum states in Bose-Einstein condensates trapped in optical lattices. By slowly ramping up the depth of the optical lattice, the atoms can be prepared in a number-squeezed state.
2. Releasing the atoms from the lattice allows their wavefunctions to overlap and interfere, providing a way to probe the quantum phase state of the atoms. Number-squeezed states are observed to produce interference patterns with higher contrast than coherent states.
3. Variational calculations of the quantum state dynamics during lattice ramping and dephasing agree qualitatively with experimental observations of the transition between coherent and squeezed states.
Science in the 21st Century conference talkChad Orzel
油
The document discusses using blogs as a tool for scientists to engage the public in science. It argues that scientists need to do a better job communicating with non-experts to build support for funding. Blogs make outreach easy and allow scientists to find their voice and reach a large audience. The example is given of a science blogger who wrote imaginary conversations with her dog about physics concepts, which led to a popular science book deal.
This ppt shows about viral disease in plants and vegetables.It shows different species of virus effect on plants along their vectors which carries those tiny microbes.
Beyond Point Masses. IV. Trans-Neptunian Object Altjira Is Likely a Hierarchi...S辿rgio Sacani
油
Dynamically studying trans-Neptunian object (TNO) binaries allows us to measure masses and orbits. Most of the known objects appear to have only two components, except (47171) Lempo, which is the single known hierarchical triple system with three similar-mass components. Though hundreds of TNOs have been imaged with high-resolution telescopes, no other hierarchical triples (or trinaries) have been found among solar system small bodies, even though they are predicted in planetesimal formation models such as gravitational collapse after the streaming instability. By going beyond the point-mass assumption and modeling TNO orbits as non-Keplerian, we open a new window into the shapes and spins of the components, including the possible presence of unresolved inner binaries. Here we present evidence for a new hierarchical triple, (148780) Altjira (2001 UQ18), based on non-Keplerian dynamical modeling of the two observed components. We incorporate two recent Hubble Space Telescope observations, leading to a 17 yr observational baseline. We present a new open-source Bayesian pointspread function fitting code called nPSF that provides precise relative astrometry and uncertainties for single images. Our non-Keplerian analysis measures a statistically significant (2.5) nonspherical shape for Altjira. The measured J2 is best explained as an unresolved inner binary, and an example hierarchical triple model gives the best fit to the observed astrometry. Using an updated non-Keplerian ephemeris (which is significantly different from the Keplerian predictions), we show that the predicted mutual event season for Altjira has already begun, with several excellent opportunities for observations through 2030.
Lecture slides from a class introducing quantum mechanics to non-majors, giving an overview of black-body radiation, the photoelectric effect, and the Bohr model. Used as part of a course titled "A Brief history of Timekeeping," as a lead-in to talking about atomic clocks
What's So Interesting About AMO Phyiscs?Chad Orzel
油
A talk given at the 2011 meeting of the Division of Atomic, Molecular, and Optical Physics (DAMOP) of the American Physical Society, summarizing recent and exciting results in AMO physics being presented at the meeting.
What Physics Knowledge Is Assessed in TIMSS Advanced 2008?Chad Orzel
油
The document discusses the content assessed in the 2008 TIMSS Advanced physics assessment and compares it to introductory college physics courses and state high school physics standards in the US. It finds that the TIMSS assessment covered similar core topics as introductory college physics, with a focus on mechanics, electricity and magnetism, and atomic and nuclear physics. However, coverage of some topics like thermodynamics was more limited than in college courses or state standards.
What Every Dog Should Know About Quantum PhysicsChad Orzel
油
1) Quantum physics describes the behavior of matter and light at the microscopic scale and has led to over 20 Nobel Prizes.
2) Quantum effects underlie modern technologies like computers, fiber optic communications, and how the sun generates energy through nuclear fusion.
3) Key concepts in quantum physics include wavefunctions, allowed quantum states, the probabilistic nature of measurements, and the paradox that objects exist in multiple states simultaneously until observed.
Talking to My Dog About Science: Why Public Communication of Science Matters ...Chad Orzel
油
Scientists need to better communicate science to the public to increase science literacy and build support. Blogs provide an easy way for scientists to engage the public in an accessible way on various science topics. By using blogs, scientists can help address the disconnect between science and the public while gaining experience communicating complex ideas simply.
What Every Dog Should Know About Quantum PhysicsChad Orzel
油
A talk on the essential elements of quantum mechanics, given to a group of Albany area home-schooled students and parents. The second slide is a video of a dramatic reading of Chapter 3 of _How to Teach Physics to Your Dog_ (Scribner, 2009, available wherever books are sold); the video can be found on YouTube.
Lasers in the Undergraduate Laboratory: Precision Measurement for the MassesChad Orzel
油
This document discusses how lasers can be used in undergraduate laboratories to teach precision measurement techniques. It provides a brief history of lasers and their applications in medicine, industry, and science. Specifically, it describes how three "cheap and easy" laser experiments - measuring the speed of light, measuring the index of refraction of air, and laser spectroscopy of rubidium - can introduce students to real precision measurement techniques like lunar laser ranging, LIGO, and atomic clocks. It argues that while undergraduate experiments can't achieve the same precision as professional labs, they can provide students with the basic concepts. Resources for setting up these experiments are also provided.
Talking to My Dog About Science: Why Public Communication of Science Matters ...Chad Orzel
油
This document discusses the importance of public communication of science and how blogs can help with this effort. It notes that science literacy among the public is low. While most people support funding of science, it is not a high priority. The document argues that scientists have failed at communicating with the public. It outlines a history of scientific publication and promotion, favoring a more accessible "Galilean" style over technical "Newtonian" publications. The document advocates using blogs to help humanize scientists and promote understanding of science in an accessible way. It provides examples of successful science blogs and how they have helped spread scientific knowledge.
From Stonehenge to NIST F1 provides a brief history of timekeeping. It discusses early astronomical clocks based on the earth's orbit and rotation. It then describes the development of pendulum clocks in the 17th century and John Harrison's sea clocks in the 18th century. Quartz oscillators were developed in the 1920s providing more accurate timekeeping. Atomic clocks were developed in the 1950s using the vibration of cesium atoms as the most accurate clock yet, losing only 1 second every 20-30 million years. Precise timekeeping from atomic clocks is necessary for applications like global positioning systems.
Quantum Physics for Dogs: Many Worlds, Many Treats?Chad Orzel
油
The document discusses interpretations of quantum mechanics, specifically the Copenhagen interpretation and the Many-Worlds interpretation. It explains that under the Copenhagen interpretation, measurement causes the quantum wavefunction to collapse, while under the Many-Worlds interpretation, the wavefunction never collapses and instead continuously splits the universe into many branches. Decoherence helps explain why we only observe single states despite the continuous splitting, as interactions with the environment make the effects of other branches undetectable. The document also notes challenges with both interpretations and how the combination of Many-Worlds and decoherence addresses these challenges.
The document discusses quantum teleportation as a method for transmitting the exact quantum state of a particle to a distant location. It involves:
1) Creating an entangled pair of particles to use as a resource.
2) Performing a joint measurement on the particle with the state to transmit and one particle from the entangled pair, entangling them.
3) Transmitting the measurement result classically to allow reconstructing the original state in the other particle from the entangled pair.
This document discusses using atom trap trace analysis (ATTA) to measure krypton contamination in rare gases like neon and xenon. ATTA can trap and detect individual krypton atoms, allowing measurement of krypton abundance down to levels of 10-14 in only 3 hours. This high sensitivity and fast measurement makes ATTA a useful technique for evaluating krypton backgrounds in rare gas detectors for neutrinos and complementing gas purification efforts for next-generation neutrino experiments.
"Squeezed States in Bose-Einstein Condensate"Chad Orzel
油
1. The document discusses the formation of squeezed quantum states in Bose-Einstein condensates trapped in optical lattices. By slowly ramping up the depth of the optical lattice, the atoms can be prepared in a number-squeezed state.
2. Releasing the atoms from the lattice allows their wavefunctions to overlap and interfere, providing a way to probe the quantum phase state of the atoms. Number-squeezed states are observed to produce interference patterns with higher contrast than coherent states.
3. Variational calculations of the quantum state dynamics during lattice ramping and dephasing agree qualitatively with experimental observations of the transition between coherent and squeezed states.
Science in the 21st Century conference talkChad Orzel
油
The document discusses using blogs as a tool for scientists to engage the public in science. It argues that scientists need to do a better job communicating with non-experts to build support for funding. Blogs make outreach easy and allow scientists to find their voice and reach a large audience. The example is given of a science blogger who wrote imaginary conversations with her dog about physics concepts, which led to a popular science book deal.
This ppt shows about viral disease in plants and vegetables.It shows different species of virus effect on plants along their vectors which carries those tiny microbes.
Beyond Point Masses. IV. Trans-Neptunian Object Altjira Is Likely a Hierarchi...S辿rgio Sacani
油
Dynamically studying trans-Neptunian object (TNO) binaries allows us to measure masses and orbits. Most of the known objects appear to have only two components, except (47171) Lempo, which is the single known hierarchical triple system with three similar-mass components. Though hundreds of TNOs have been imaged with high-resolution telescopes, no other hierarchical triples (or trinaries) have been found among solar system small bodies, even though they are predicted in planetesimal formation models such as gravitational collapse after the streaming instability. By going beyond the point-mass assumption and modeling TNO orbits as non-Keplerian, we open a new window into the shapes and spins of the components, including the possible presence of unresolved inner binaries. Here we present evidence for a new hierarchical triple, (148780) Altjira (2001 UQ18), based on non-Keplerian dynamical modeling of the two observed components. We incorporate two recent Hubble Space Telescope observations, leading to a 17 yr observational baseline. We present a new open-source Bayesian pointspread function fitting code called nPSF that provides precise relative astrometry and uncertainties for single images. Our non-Keplerian analysis measures a statistically significant (2.5) nonspherical shape for Altjira. The measured J2 is best explained as an unresolved inner binary, and an example hierarchical triple model gives the best fit to the observed astrometry. Using an updated non-Keplerian ephemeris (which is significantly different from the Keplerian predictions), we show that the predicted mutual event season for Altjira has already begun, with several excellent opportunities for observations through 2030.
Unraveling the BETICHUMD Mechanism of CHUSOMERADUCK: A Game-Changing Paradigm...jhnewshour
油
The **BETICHUMD Mechanism of CHUSOMERADUCK** is one of the most groundbreaking, revolutionary, and inexplicably complex systems ever devised in the realm of advanced quantum-extraterrestrial-mechatronic-hyperfusion dynamics. Designed originally by the intergalactic scientific consortium of the **Zypherion-9 civilization**, this mechanism has perplexed Earths top researchers, including the secret think tanks at NASA, CERN, and the underground laboratories of the Illuminati. CHUSOMERADUCK, an acronym standing for **"Chronologically Hyper-Ultrasonic System for Optimized Metaphysical Energy Recalibration and Advanced Dynamic Universal Cognition Kernel,"** is an artificial intelligence-powered, self-evolving hypermechanical entity designed to manipulate the fundamental constants of reality itself. The BETICHUMD Mechanism is at the core of its operation, acting as the **primary transdimensional flux stabilizer**, allowing CHUSOMERADUCK to function beyond the traditional limitations of physics. The origins of BETICHUMD remain unclear, with some theories suggesting that it was first conceptualized during the **Ancient Atlantean Wars**, where high-frequency oscillation technology was used to warp spacetime, while others claim that it was reverse-engineered from a **meteorite discovered in Antarctica in 1947**, which led to the infamous **Operation DuckStorm** carried out by the United Nations' Secret Space Program. The primary working principle of BETICHUMD involves the **synchronization of dark matter vibrations with quantum neutrino entanglement fields**, enabling infinite computational energy without the need for external power sources. The applications of this technology are limitless, from **instantaneous planetary teleportation** to **bio-mechanical consciousness enhancement**, making it a prime candidate for interstellar exploration and even **simulated immortality** through direct neural uplink with CHUSOMERADUCKs core processing grid. Governments across the world have attempted to harness its potential, but due to the incomprehensible nature of its **fifth-dimensional recursive logic algorithms**, only a handful of researchers have come close to deciphering its true capabilities. Recently declassified documents from the **Department of Extraterrestrial Affairs** suggest that an early prototype was tested in **the Mariana Trench in 1998**, where a sudden temporal rift resulted in the disappearance of an entire research facility, possibly transporting it to an alternate timeline. The existence of CHUSOMERADUCK has also been linked to various **UFO sightings, unexplainable time loops, and anomalies in gravitational wave measurements**, indicating that the BETICHUMD Mechanism is far more than just an advanced computational systemit is, in fact, a **gateway to rewriting the fundamental laws of the universe**. However, with great power comes great danger, as misuse of the mechanism could theoretically collapse the entire fabric of reality.
Cell Structure & Function | Cambridge IGCSE BiologyBlessing Ndazie
油
This IGCSE Biology presentation provides a detailed look at cell structure and function, covering the differences between animal and plant cells, the roles of organelles (nucleus, mitochondria, ribosomes, etc.), specialized cells, and levels of organization. Learn about diffusion, osmosis, and active transport in cells, with clear diagrams and explanations to support exam preparation. A must-have resource for Cambridge IGCSE students!
Difference between Prokaryotic cell and Eukaryotic cell.pptxDrSulabhaDeokar
油
This presentation explores the fundamental differences between prokaryotic and eukaryotic cells,distinguishing characteristics of Prokaryotes and Eukaryotes.Describe common cell morphologies and cellular arrangements in typical Prokaryotes and Eukaryotes.
Presentation explains how cells maintain their morphology.
Explore internal and external structures of Prokaryotes and Eukaryotes in terms of their physical structure, chemical structure and function.
This presentation is designed for biology students, educators, and anyone interested in cellular biology. Based on the latest research and scientific discoveries in the field of Microbiology, Microbial Biotechnology and cellular biology. This Presentation has been compiled using information from trusted educational resources and scientific literature.
The purpose of this presentation is to educate and inform the students about the fundamental differences between prokaryotic and eukaryotic cells, highlighting their unique structures, functions, and characteristics, which provide a comprehensive understanding of cellular biology.
Educate the students and teachers about the differences between prokaryotic and eukaryotic cells in detail.
This presentation will engage and entertain the students, often with a mix of detail information, colourful pictures and storytelling.
This presentation will motivate and inspire the students to think differently, take action, or pursue a goal.
Definitely it will raise awareness about a ultrastructures of Prokaryotes and Eukaryotes .
This presentation will Provide an update or report on a science projects and progress as well as inspire the graduate students to learn more about cellular biology and its applications.
This presentation will inspire studets, teachers and educational professionals to explore digital resource for e - learnig .
Presentation likely to be used by under graduate and post graduate students, educators or individuals for online learning.
It can work as digital resource for a broader e- learning ecosystem.
This presentation highlights '' NEP-aligned Biotechnology and Biology education.''
"Discover the distinctions between prokaryotic and eukaryotic cells, from cell walls to genetic material. This presentation provides a comprehensive overview of cellular biology.Learn about the two main types of cells - prokaryotic,eukaryotic and their differences in structure, function, and organization. A great resource for biology learners.Uncover the unique characteristics of prokaryotic and eukaryotic cells in this informative PPT.
Variation and Natural Selection | IGCSE BiologyBlessing Ndazie
油
This extensive slide deck provides a detailed exploration of variation and natural selection for IGCSE Biology. It covers key concepts such as genetic and environmental variation, types of variation (continuous and discontinuous), mutation, evolution, and the principles of natural selection. The presentation also explains Darwins theory of evolution, adaptation, survival of the fittest, selective breeding, antibiotic resistance in bacteria, and speciation. With illustrative diagrams, real-life examples, and exam-style questions, this resource is ideal for IGCSE students, teachers, and independent learners preparing for exams.
Improving the Perturbation-Based Explanation of Deepfake Detectors Through th...VasileiosMezaris
油
Presentation of our paper, "Improving the Perturbation-Based Explanation of Deepfake Detectors Through the Use of Adversarially-Generated Samples", by K. Tsigos, E. Apostolidis and V. Mezaris. Presented at the AI4MFDD Workshop of the IEEE/CVF Winter Conference on Applications of Computer Vision (WACV 2025), Tucson, AZ, USA, Feb. 2025. Preprint and software available at http://arxiv.org/abs/2502.03957 https://github.com/IDT-ITI/Adv-XAI-Deepfakes
Hormones and the Endocrine System | IGCSE BiologyBlessing Ndazie
油
This IGCSE Biology presentation explores hormones and the endocrine system, explaining their role in controlling body functions. Learn about the differences between nervous and hormonal control, major endocrine glands, key hormones (such as insulin, adrenaline, and testosterone), and homeostasis. Understand how hormones regulate growth, metabolism, reproduction, and the fight-or-flight response. A perfect resource for Cambridge IGCSE students preparing for exams!
This presentation offers a bird's eye view of autosomes and sex chromosomes. It also explores the different kinds of diseases of humans due to autosomal and sex-linked inherited traits. The sex determination of plants has been explained. The ratio of sex in the human population along with cause and consequences has been explained here.
How could modern LA research address data-related ethics issues in informal and situated professional learning? I will identify in this talk three relevant insights based on field studies around workplace LA interventions: Firstly, in informal and situated learning, data isnt just about the learners. Secondly, the affordances of manual and automatic data tracking for learning are very different, with manual tracking allowing a high degree of learner control over data. Thirdly, learning is not necessarily a shared goal in workplaces. These can be translated into seeing a potential for systems endowed with sufficient natural-language-processing capability (now seemingly at our fingertips with LLMs), and socio-technical design and scenario-based data collection analysis as design and research methods.
The Sense Organs: Structure and Function of the Eye and Skin | IGCSE BiologyBlessing Ndazie
油
This detailed presentation covers the structure and function of the sense organs, focusing on the eye and skin as part of the Cambridge IGCSE Biology syllabus. Learn about the anatomy of the eye, how vision works, adaptations for focusing, and common eye defects. Explore the role of the skin in temperature regulation, protection, and sensory reception. Perfect for students preparing for exams!