Radio frequency propagation model
In telecommunication, the free-space path loss (FSPL) is the attenuation of radio energy between the feedpoints of two antennas that results from the combination of the receiving antenna's capture area plus the obstacle-free, line-of-sight path through free space (usually air). The "Standard Definitions of Terms for Antennas", IEEE Std 145-1993, defines "free-space loss" as "The loss between two isotropic radiators in free space, expressed as a power ratio." It does not include any power loss in the antennas themselves due to imperfections such as resistance. Free space loss increases with the square of distance between the antennas because the radio waves spread out by the inverse square law and decreases with the square of the wavelength of the radio waves. The FSPL is rarely used standalone, but rather as a part of the Friis transmission formula, which includes the gain of antennas. It is a factor that must be included in the power link budget of a radio communication system, to ensure that sufficient radio power reaches the receiver such that the transmitted signal is received intelligibly. (Wikipedia).
Interstellar flight: 10 Hard Facts
We can build powerful rockets able to carry people and machines into orbit, or even vault them to the moon. But our fastest spacecraft don't hold a candle to the distances that define Interstellar Flight. So what's on the drawing boards? What futuristic designs and fuel options promise to
From playlist Spaceten
What's The Fastest Way To Die In Space? Space Has So Many Ways to Kill You
Space is a hostile environment for human beings. No part of it will permit you to survive longer than a minute. But what's the fastest way to die in space?
From playlist Space Exploration
Calculating the Magnetic Permeability of Free Space using Parallel Conductors
Using two parallel conductors and the magnetic field interactions between them I was able to calculate the Magnetic Permeability of Free Space.
From playlist Physics
I guess this is what happens when you don't put anything up to keep the shopping carts from falling out of the truck.
From playlist Inertia
Gravitation (16 of 17) Escape Velocity, An Explanation
This videos explains what is meant by the term escape velocity. It also shows you how to derive the the equation for escape velocity and how to calculate the escape velocity of Earth. The escape velocity is the lowest initial velocity that an object needs to escape the gravitational att
From playlist Gravitation: Orbital Velocity, Orbital Period, Potential Energy, Kinetic Energy, Mass and Weight
Exploring the Final Frontier: A Look at the Future of Space Travel
The future of space exploration is full of endless possibilities and exciting developments. From the possibility of colonizing Mars and beyond to the potential for space tourism to become a reality, there are many exciting things on the horizon. One of the most exciting advances in space
From playlist Space Journey 101
Physics - E&M: Ch 40.1 Current & Resistance Understood (10 of 17) What is the Mean Free Path?
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain that mean free path is the distances between collisions of electrons moving conductors. It determines whether a conductor will have a high or low resistivity or conductivity. Next video in th
From playlist THE "WHAT IS" PLAYLIST
Ramil Mouad - Parallel Replica algorithm for Langevin dynamics and Adaptative Metadynamics
Recorded 28 March 2023. Ramil Mouad of Seoul National University presents "Parallel Replica algorithm for Langevin dynamics and Adaptative Metadynamics" at IPAM's Increasing the Length, Time, and Accuracy of Materials Modeling Using Exascale Computing workshop. Abstract: This talk will be
From playlist 2023 Increasing the Length, Time, and Accuracy of Materials Modeling Using Exascale Computing
The free fall of a marker and book are compared, first in the atmosphere and then in a tube of vacuum. With air resistance, the paper fall more slowly. In a vacuum, the objects fall at the same rate independent of their respective masses.
From playlist MECHANICS
Spotlight Talks Pt1 - Zhiyuan Li, John Zarka, Stanislav Fort
Workshop on Theory of Deep Learning: Where next? Topic: Spotlight Talks: Zhiyuan Li, John Zarka, Stanislav Fort Speaker: Various Date: October 18, 2019 For more video please visit http://video.ias.edu
From playlist Mathematics
Physics 50 E&M Radiation (13 of 33) Plane E&M Waves and Permittivity of Free Space
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain permitivity of free space.. Next video in series: http://youtu.be/PHSFW6j8Tz0
From playlist PHYSICS 50 ELECTROMAGNETIC RADIATION
MIMO wireless system design for 5G, LTE, and WLAN in MATLAB:
Learn how to model, simulate and test 5G, WLAN, LTE massive MIMO, hybrid beamforming design in MATLAB and Simulink - Free resource to learn about large-scale antenna systems for 5G wireless systems: http://bit.ly/2H3sKa4 Get a free product Trial: https://goo.gl/ZHFb5u Learn more about MAT
From playlist Hybrid beamforming and MIMO designs for 5G, LTE, and WLAN
Computational Principles of Sensorimotor Control (Lecture 1) by Daniel Wolpert
PROGRAM ICTP-ICTS WINTER SCHOOL ON QUANTITATIVE SYSTEMS BIOLOGY (ONLINE) ORGANIZERS: Vijaykumar Krishnamurthy (ICTS-TIFR, India), Venkatesh N. Murthy (Harvard University, USA), Sharad Ramanathan (Harvard University, USA), Sanjay Sane (NCBS-TIFR, India) and Vatsala Thirumalai (NCBS-TIFR,
From playlist ICTP-ICTS Winter School on Quantitative Systems Biology (ONLINE)
Bruce Turkington (DDMCS@Turing): Models that minimize the rate of information loss
Complex models in all areas of science and engineering, and in the social sciences, must be reduced to a relatively small number of variables for practical computation and accurate prediction. In general, it is difficult to identify and parameterize the crucial features that must be incorp
From playlist Data driven modelling of complex systems
Yann LeCun: "Deep Learning, Graphical Models, Energy-Based Models, Structured Prediction, Pt. 4"
Graduate Summer School 2012: Deep Learning, Feature Learning "Deep Learning, Graphical Models, Energy-Based Models, Structured Prediction, Pt. 4" Yann LeCun, New York University Institute for Pure and Applied Mathematics, UCLA July 13, 2012 For more information: https://www.ipam.ucla.ed
From playlist GSS2012: Deep Learning, Feature Learning
Rafael Gomez-Bombarelli - End-to-end learning and auto-differentiation: forces, uncertainties, etc.
Recorded 24 January 2023. Rafael Gomez-Bombarelli of the Massachusetts Institute of Technology presents "End-to-end learning and auto-differentiation: forces, uncertainties, observables, trajectories and scales" at IPAM's Learning and Emergence in Molecular Systems Workshop. Abstract: Deep
From playlist 2023 Learning and Emergence in Molecular Systems
Multiparticle Interactions in Plasmonic Nanostructures by Omar S. Magana Loaiza
DISCUSSION MEETING STRUCTURED LIGHT AND SPIN-ORBIT PHOTONICS ORGANIZERS: Bimalendu Deb (IACS Kolkata, India), Tarak Nath Dey (IIT Guwahati, India), Subhasish Dutta Gupta (UOH, TIFR Hyderabad, India) and Nirmalya Ghosh (IISER Kolkata, India) DATE: 29 November 2022 to 02 December 2022 VE
From playlist Structured Light and Spin-Orbit Photonics - Edited
Tutorial on deep learning for causal inference
Speakers: Bernard Koch (SICSS-Los Angeles 19, 20, 21; Ph.D. student in Sociology at UCLA) Description: This tutorial will teach participants how to build simple deep learning models for causal inference. Although this literature is still quite young, neural networks have the potential to
From playlist All Videos
Potential Answer for Fermi Paradox
You can buy Universe Sandbox 2 game here: http://amzn.to/2yJqwU6 Hello and welcome to What Da Math! In this video, we will talk about alien life. Links: http://www.qsl.net/pa2ohh/jsffield.htm http://www.seti.org.au/spacecom/setionabudget.html https://en.wikipedia.org/wiki/Link_budget htt
From playlist Extraterrestrial Life
Introduction to Free-Fall and the Acceleration due to Gravity
In this lesson we extend our knowledge of Uniformly Accelerated Motion to include freely falling objects. We talk about what Free-Fall means, how to work with it and how to identify and object in Free-Fall. Today I get to introduce so many of my favorites: the medicine ball, the vacuum t
From playlist Motion in One Dimension - AP Physics 1