A ratchet effect is an instance of the restrained ability of human processes to be reversed once a specific thing has happened, analogous with the mechanical ratchet that holds the spring tight as a clock is wound up. It is related to the phenomena of featuritis and scope creep in the manufacture of various consumer goods, and of mission creep in military planning. In sociology, "ratchet effects refer to the tendency for central controllers to base next year's targets on last year's performance, meaning that managers who expect still to be in place in the next target period have a perverse incentive not to exceed targets even if they could easily do so". (Wikipedia).
This mechanism directly converts the continuous rotary motion of a drive shaft into the intermittent linear motion of a rack. To flip the green pawl to change the motion direction of the rack without changing the input motion direction.
From playlist Mechanisms
This mechanism directly converts the continuous rotary motion of a drive shaft into the intermittent linear motion of a rack. STEP files of this video: http://www.mediafire.com/file/1c0iaa3teed88el/RatchetMechanism6STEP.zip Inventor files: http://www.mediafire.com/file/ujcw5wcp8nabb65/Ratc
From playlist Mechanisms
This mechanism is used in hand powered electric torches to convert oscillatory motion into continuous rotation. STEP files of this video: http://www.mediafire.com/file/qo3kwb01k9pen57/RatchetMechanism10STEP.zip/file Inventor files: http://www.mediafire.com/file/enoia1bi94oc668/RatchetMech
From playlist Mechanisms
Input: blue crank. Output: pink ratchet wheel. Both go and back motions of the blue crank make the wheel rotate in the same direction. The pawls push the wheel. Gravity maintains contact between pawls and ratchet wheel. STEP files of this video: http://www.mediafire.com/file/7bawqpv59yvwlw
From playlist Mechanisms
Teach Astronomy - Doppler Effect
http://www.teachastronomy.com/ The Doppler Effect is the shift of wavelength or frequency of a source of waves due to the motion of that source of waves. Doppler Effect is most familiar in terms of sound waves. As a source of sound, such as a siren, approaches you, the pitch or frequency
From playlist 06. Optics and Quantum Theory
Input: blue oscillating crank. Output: twin ratchet wheel of tooth number Z. Both go and back motions of the crank make the wheel rotate in the same direction. In 1 rev. of the input, the output rotates 1/Z rev. with two dwells. Angle deflection between the two ratchet wheels is 360/2Z de
From playlist Mechanisms
Astronomy - Ch. 9.1: Earth's Atmosphere (6 of 61) Atmospheric Temperature Gradient
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the various “layers” of Earth's atmosphere and it's various temperature gradient. I will explain why Earth's temperature decreases, stays constant, increases, stays constant, decreases, stays
From playlist THE GREENHOUSE EFFECT
Orange roller allows green round rack to move up and prevents it from falling. STEP files of this video: https://www.mediafire.com/file/yyl2d67atw52qnj/RatchetMechanism34STEP.zip/file Inventor files of this video: https://www.mediafire.com/file/32acxjdnvtgjwjr/RatchetMechanism34Inv.zip/f
From playlist Mechanisms
Active and evolvable matter: A perspective from physics about biology by Shashi Thutupalli (Part 2)
Games, Epidemics and Behavior URL: http://www.icts.res.in/discussion_meeting/geb2016/ DATES: Monday 27 Jun, 2016 - Friday 01 Jul, 2016 VENUE : Madhava lecture hall, ICTS Bangalore DESCRIPTION: The two main goals of this Discussion Meeting are: 1. To explore the foundations of policy d
From playlist Games, Epidemics and Behavior
Episode 061: McMurphy's Stay at the State Hospital — One Flew Over the Cuckoo's Nest (1975)
Join Alex as he discusses One Flew Over the Cuckoo's Nest (1975) [https://www.imdb.com/title/tt0073486], a tour de force from Milos Forman, Jack Nicholson, and Louise Fletcher! The film follows Randall McMurphy, an inmate at a work camp in Oregon who successfully (?) tricks them into think
From playlist CinemaPsych Podcast
From playlist Courses and Series
Input: green crank oscillating. Output: ratchet wheel of tooth number Z rotating interruptedly. The gravity maintains contact between 3 identical pawls and ratchet wheel. Speciality: the mechanism acts as in case where there is one pawl and ratchet wheel tooth number is 3Z. It helps increa
From playlist Mechanisms
The Long-Ranged Influence of Disorder on Active Systems by Yariv Kafri
DISCUSSION MEETING : STATISTICAL PHYSICS OF COMPLEX SYSTEMS ORGANIZERS : Sumedha (NISER, India), Abhishek Dhar (ICTS-TIFR, India), Satya Majumdar (University of Paris-Saclay, France), R Rajesh (IMSc, India), Sanjib Sabhapandit (RRI, India) and Tridib Sadhu (TIFR, India) DATE : 19 December
From playlist Statistical Physics of Complex Systems - 2022
What Darwin won't tell you about evolution - with Jonathan Pettitt
How did the complexity of life evolve? Was it via finely-tuned natural selection, or a more messy process altogether? Watch the Q&A for this video here: https://youtu.be/TS3uyVtuZGI Subscribe for regular science videos: http://bit.ly/RiSubscRibe In this talk, Jonathan Pettitt explains h
From playlist Ri Talks
MIT 5.08J Biological Chemistry II, Spring 2016 Instructor: Elizabeth Nolan View the complete course: https://ocw.mit.edu/5-08JS16 YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP63vvR4xtexZdoPywRYIZI0- Today's lecture completes the discussion on the translation cycle,
From playlist MIT 5.08J Biological Chemistry II, Spring 2016
Lab evolution with e coli and yeast (Lecture - 02) by Paul Sniegowski
Winter School on Quantitative Systems Biology DATE:04 December 2017 to 22 December 2017 VENUE:Ramanujan Lecture Hall, ICTS, Bengaluru The International Centre for Theoretical Sciences (ICTS) and the Abdus Salam International Centre for Theoretical Physics (ICTP), are organizing a Winter S
From playlist Winter School on Quantitative Systems Biology
Why Don’t Sheep Shrink In The Rain?
We appreciate your support on https://www.patreon.com/MinuteEarth Getting wet isn’t REALLY what makes wool shrink; it merely exacerbates the friction between the wool fibers, which is stronger in one direction than another, so when agitated in the washer or dryer, they migrate in relation
From playlist Biology
Levels of selection (3), the evolution of sex.
This video looks at the evolution of sexual reproduction and the reason for its widespread occurrence despite the "two-fold cost" associated with it. Three advantages of sex are identified: production of increased variation in offspring, increased rate of population evolution, and the redu
From playlist TAMU: Bio 312 - Evolution | CosmoLearning Biology
Visualization of the Coriolis and centrifugal forces
A visual demonstration of the effects of the Coriolis and Centrifugal forces. Visit my homepage, https://www.udiprod.com/, or read about my latest book http://www.zutopedia.com This clip demonstrates the effects of the Coriolis and Centrifugal forces, by viewing various scenes from both
From playlist Animated Physics Simulations
Stochastic resonance and ratchet effect in sinusoidal... by Mangal Chandra Mahato
Indian Statistical Physics Community Meeting 2016 URL: https://www.icts.res.in/discussion_meeting/details/31/ DATES Friday 12 Feb, 2016 - Sunday 14 Feb, 2016 VENUE Ramanujan Lecture Hall, ICTS Bangalore This is an annual discussion meeting of the Indian statistical physics community wh
From playlist Indian Statistical Physics Community Meeting 2016