A hydrometer or lactometer is an instrument used for measuring density or relative density of liquids based on the concept of buoyancy. They are typically calibrated and graduated with one or more scales such as specific gravity. A hydrometer usually consists of a sealed hollow glass tube with a wider bottom portion for buoyancy, a ballast such as lead or mercury for stability, and a narrow stem with graduations for measuring. The liquid to test is poured into a tall container, often a graduated cylinder, and the hydrometer is gently lowered into the liquid until it floats freely. The point at which the surface of the liquid touches the stem of the hydrometer correlates to relative density. Hydrometers can contain any number of scales along the stem corresponding to properties correlating to the density. Hydrometers are calibrated for different uses, such as a lactometer for measuring the density (creaminess) of milk, a saccharometer for measuring the density of sugar in a liquid, or an alcoholometer for measuring higher levels of alcohol in spirits. The hydrometer makes use of Archimedes' principle: a solid suspended in a fluid is buoyed by a force equal to the weight of the fluid displaced by the submerged part of the suspended solid. The lower the density of the fluid, the deeper a hydrometer of a given weight sinks; the stem is calibrated to give a numerical reading. (Wikipedia).
Introduction to Geometer's Sketchpad: Measurements
This video demonstrates some of the measurement and calculation features of Geometer's Sketchpad.
From playlist Geometer's Sketchpad
Multimeter Review / DMM Review / buyers guide / tutorial
A list of my multimeters can be purchased here: http://astore.amazon.com/m0711-20?_encoding=UTF8&node=5 In this video I do a review of several digital multimeters. I compare features and functionality. I explain safety features, number of digits, display count, accuracy and resolution. Th
From playlist Multimeter reviews, buyers guide and comparisons.
Hydrometer Physics Problems - Density & Specific Gravity Calculations
This video tutorial explains how to solve hydrometer problems in physics. It discusses how it works and explains how to calculate the density of the hydrometer and how to use it to calculate the density and specific gravity of the surrounding fluid. This video contains plenty of examples
From playlist New Physics Video Playlist
Physics experiments Hydrostatic pressure (science demonstrations)
Physics (la physique)
From playlist PRESSURE
Micrometer/diameter of daily used objects.
What was the diameter? music: https://www.bensound.com/
From playlist Fine Measurements
Find the Hydronium Ion Concentration given the pH
Please Subscribe here, thank you!!! https://goo.gl/JQ8Nys Find the Hydronium Ion Concentration given the pH
From playlist Word Problems
More details visit: http://www.techtrixinfo.com/ This video shows how to check the specific gravity of a lead acid battery using a hydrometer. Please rate us and drop your comments. As you can see in the video, hydrometer consists of a glass tube which has a float inside. On the bottom
From playlist Hydraulics and related stuff.
Brady and Keith look at some fancy 19th Century hydrometers - designed by Sir Benjamin Sikes. Subscribe to Objectivity: http://bit.ly/Objectivity_Sub Films by James Hennessy and Brady Haran Royal Society website: http://bit.ly/Royal_Society The Royal Society's own YouTube channel: https
From playlist Object Unboxing on Objectivity
Rainbow density column -- saltwater // Homemade Science with Bruce Yeany
Large and small containers are used to make several examples of 6 layer density column of using salt, water and food coloring. What's nice about using saltwater instead of sugar water is the columns can be left to sit for several weeks and will not spoil or form mold like sugar water wil
From playlist Homemade Science with Bruce Yeany
Towards a multi-satellite radiance assimilation in regional models - Chakravarthy Balaji
PROGRAM: Data Assimilation Research Program Venue: Centre for Applicable Mathematics-TIFR and Indian Institute of Science Dates: 04 - 23 July, 2011 DESCRIPTION: Data assimilation (DA) is a powerful and versatile method for combining observational data of a system with its dynamical mod
From playlist Data Assimilation Research Program
Vernier caliper / diameter and length of daily used objects.
subscribe to my channel: https://www.youtube.com/channel/UC7HtImwPgmb1axsTJE5lxeA?sub_confirmation=1
From playlist Fine Measurements
Electronic measurement equipment and multimeters - Part 1
In this video series I show different measurement equipment (multimeters, etc) and why / how I use them. In later videos I'll explore different features and highlight pro's and con's. A list of my multimeters can be purchased here: http://astore.amazon.com/m0711-20?_encoding=UTF8&node=
From playlist Electronic Measurement Equipment
Experimenting With Liquid Density (Mr. Wizard)
Learn about liquid density with Mr. Wizard. Subscribe now for more science, nature and technology clips from the 1980's Nickelodeon show, Mr. Wizard's World, every week on #WizardWednesdays.
From playlist How It Works
Madagascan Hissing Cockroaches as Pets | Animal Care
Hey guys! Today I decided to do a video about my very favorite species of Cockroach, the Madagascan Hissing Cockroach. Although they look large and imposing, they are exceptionally gentle when being handled, and wonderfully fascinating pets to keep and observe. I hope you learn some n
From playlist Animal Videos
What Sewage Treatment and Brewing Have in Common
The similarities and differences between sewage and brewage In both wastewater treatment and fermentation, humans co-opt microorganisms to convert a less desirable liquid into a better one. This video explores the secondary wastewater treatment process through the lens of homebrewing. Wa
From playlist Civil Engineering
Making Hard Cider for Halloween!
Today we show you how to brew your own hard cider, but it gets better... We show you how to carbonate it and with a common vitamin it glows! Find us on Patreon and our website: https://www.patreon.com/techingredients https://www.techingredients.com/
From playlist Distillation
Micrometer / diameter of daily used objects
What was the diameter? music: https://www.bensound.com/
From playlist Fine Measurements
How to use a Multimeter for beginners: Part 3 - Resistance and Continuity
Visit my website for more Tips, Videos, DIY projects and more: http://www.mjlorton.com/ --------------------- Click "Show more" ------------------------------- Multimeter tutorial - This series of videos is a tutorial on how to use a digital multimeter for beginners. It will also explain
From playlist How to use a multimeter for beginners
NEW NANO Saltwater Aquarium | Setting Up My Reef Tank
Download Splash for FREE: http://smarturl.it/EmzoticSplash Share your Splash reef aquariums with me on Twitter! I'll retweet the best pics! @emzoticofficial Hey Creatures! Today I'm sharing with you part 1 of my 2 part series focusing on my nano saltwater aquarium. DISCLAIMER: Nano salt
From playlist Animal Videos