The Bubnoff unit (abbreviated B) is a unit of speed equal to 1 m / 106 a. In other words, 1 B is equal to 1 meter in 1,000,000 years, 1 millimeter in 1,000 years, or one micrometer per year. It was defined in 1969. The Bubnoff unit is employed in geology to measure rates of lowering of earth surfaces due to erosion and is named after the Russian (German-Baltic) geologist Serge von Bubnoff (1888–1957). An erosion speed of 1 B also means that 1 m3 of earth is being removed from an area of 1 km2 in 1 year. Compared to everyday phenomena, erosion is under most circumstances (excluding rapid events like landslides) an extremely slow process, calling for such a specialized unit. For instance, the current average rate of erosion over the Earth's landmasses has been estimated at 30 B (30 m in a million years). There are, however, great regional differences in erosion speed. As an extreme example, the watershed area of the Semani River in Albania is eroding at a rate of almost 3000 B (3 millimeters per year), the river having been estimated to transport about 4600 tons of earth per year from the average square kilometer in its watershed. The Bubnoff unit was introduced because of a desire for a standard unit to replace the multitude of units in use, such as feet per year, centimeters per year, meters per decade, and so on. One criticism leveled was that by introducing the Bubnoff unit, it would obscure the rate of erosion behind a unit no one besides specialists understood. 1 m/s is equal to approximately 31,540,000,000,000 B. (Wikipedia).
The Atom A3 The Bohr Model of the Hydrogen Atom
The Bohr model of the atom.
From playlist Physics - The Atom
The Atom A4 The Bohr Model of the Hydrogen Atom
The Bohr model of the atom.
From playlist Physics - The Atom
The Atom A5 The Bohr Model of the Hydrogen Atom
The Bohr model of the atom.
From playlist Physics - The Atom
In quantum mechanics, a boson is a particle that follows Bose–Einstein statistics. Bosons make up one of the two classes of particles, the other being fermions. The name boson was coined by Paul Dirac to commemorate the contribution of the Indian physicist Satyendra Nath Bose in developing
From playlist Science Unplugged: Particle Physics
Bohr Model (5 of 7) Bohr Radius Derivation
This video shows how to derive the Bohr radius of a hydrogen atom and the radii for the additional excited states. The Bohr radius is a physical constant, approximately equal to the most probable distance between the nucleus and the electron in a hydrogen atom in its ground state. It is n
From playlist Quantum Mechanics
In particle physics, there are many different types of particles, mostly ending with the phrase “-on.” In this video, Fermilab’s Dr. Don Lincoln talks about fermions and bosons and what is the key difference between these two particles.
From playlist Fermilab Featured Videos
What are the W and Z particles?
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From playlist Science Unplugged: Particle Physics
Higgs Boson (extended interview footage)
Extended interview footage from the Sixty Symbols video about the Higgs Boson. Main video at http://www.youtube.com/watch?v=zTNQOShuvoQ
From playlist Sixty Symbols - Behind the Scenes
Lagrange Bicentenary - Cédric Villani's conference
From the stability of the Solar system to the stability of plasmas
From playlist Bicentenaire Joseph-Louis Lagrange
MIT RES.TLL-004 Concept Vignettes View the complete course: http://ocw.mit.edu/RES-TLL-004F13 Instructor: Ken Kamrin This video determines the units of the differential quantity dx in terms of the units of x, and explores how integration and differentiation affect units. License: Creativ
From playlist MIT STEM Concept Videos
Game Programming Patterns part 22.3 - (Rust, GGEZ) Spatial Partition
We get the unit moving across the screen and moving in and out of each of the cells! Links code - https://github.com/brooks-builds/learning_game_design_patterns twitter - https://twitter.com/brooks_patton book - http://gameprogrammingpatterns.com -- Watch live at https://www.twitch.tv/b
From playlist Game Programming Patterns Book
What is Unit Testing? | Unit Testing in Java | Software Testing Tutorial | Edureka
(** Test Automation Masters Program: https://www.edureka.co/masters-program/automation-testing-engineer-training **) This Edureka video on "What is Unit Testing?" will help you get in-depth knowledge on unit testing and why it is important to perform unit tests before moving on to the nex
From playlist Software Testing Training Videos | Edureka
Ordering Decimals | Revision for Maths GCSE and IGCSE
I want to help you achieve the grades you (and I) know you are capable of; these grades are the stepping stone to your future. Even if you don't want to study science or maths further, the grades you get now will open doors in the future. To sign up to the mailing list for discount codes
From playlist GCSE Maths Revision | Number
Game Programming Patterns part 22.1 - (Reading, JavaScript) Spatial Partition
We read through the final chapter of the Game Programming Patterns book! Links code - https://github.com/brooks-builds/learning_game_design_patterns twitter - https://twitter.com/brooks_patton book - http://gameprogrammingpatterns.com -- Watch live at https://www.twitch.tv/brookzerker
From playlist Game Programming Patterns Book
How to Make Android Apps 8 : Make An Android App
Get the Code Here : http://goo.gl/iCa2uL ( Use version 19 of the emulator to run the app! I made a mistake saying to use 20 in the video ) In this tutorial we take it to the next level. In the last video we designed the interface for our Android conversion app. This time we will create t
From playlist How to Make Android Apps
Accounting Lecture 08 Part II - LIFO & FIFO, Concluded
From the free study guides and course manuals at www.my-accounting-tutor.com. Valuation of inventories under a perpetual inventory system using LIFO and FIFO. Part II of two parts.
From playlist Accounting Lectures
Momentum Does Not Have a Unit of Measurement - So Let's Make One! (Surprisingly Tricky)
Must we always write kg m/s? Why isn't there a more snappy unit of measurement for momentum? Hi everyone, I'm back with another video - this time discussing metrology! Metrology is the "science of measurement" and metrologists are the ones who decide what units of measurement we get to us
From playlist Classical Physics by Parth G
Eureka Math Grade 5 Module 5 Lesson 10 (updated)
EngageNY/Eureka Math Grade 5 Module 5 Lesson 10 For more videos, please visit http://bit.ly/eurekapusd PLEASE leave a message if a video has a technical difficulty (audio separating from the video). Occasionally, Explain Everything will do that, requiring me to re-render the video. Duane
From playlist Eureka Math Grade 5 Module 5
What is this thing we keep hearing about - the Higgs Boson, and why is it important? Support us at: http://www.patreon.com/universetoday More stories at: http://www.universetoday.com/ Follow us on Twitter: @universetoday Follow us on Tumblr: http://universetoday.tumblr.com/ Like us on Fac
From playlist Cosmology