Units of velocity

Bubnoff unit

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).

Video thumbnail

The Atom A3 The Bohr Model of the Hydrogen Atom

The Bohr model of the atom.

From playlist Physics - The Atom

Video thumbnail

The Atom A4 The Bohr Model of the Hydrogen Atom

The Bohr model of the atom.

From playlist Physics - The Atom

Video thumbnail

The Atom A5 The Bohr Model of the Hydrogen Atom

The Bohr model of the atom.

From playlist Physics - The Atom

Video thumbnail

What is a Boson?

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

Video thumbnail

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

Video thumbnail

Fermions and Bosons

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

Video thumbnail

What are the W and Z particles?

Subscribe to our YouTube Channel for all the latest from World Science U. Visit our Website: http://www.worldscienceu.com/ Like us on Facebook: https://www.facebook.com/worldscienceu Follow us on Twitter: https://twitter.com/worldscienceu

From playlist Science Unplugged: Particle Physics

Video thumbnail

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

Video thumbnail

Lagrange Bicentenary - Cédric Villani's conference

From the stability of the Solar system to the stability of plasmas

From playlist Bicentenaire Joseph-Louis Lagrange

Video thumbnail

Unit Analysis

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

Video thumbnail

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

Video thumbnail

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

Video thumbnail

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

Video thumbnail

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

Video thumbnail

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

Video thumbnail

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

Video thumbnail

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

Video thumbnail

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

Video thumbnail

What Is The Higgs Boson?

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

Related pages

Metre per second