Density

How To : Make This Amazing 9-Layer Density Tower from Things Found in Your Kitchen

Ralph Waldo Emerson once observed that "the seed of science" was "wonder," and taking a look at this nine-layer liquid tower from Steve Spangler's Sick Science! channel, one can't help but do just that — wonder. How is this possible? Is this magic or what? While it's not exac ...more

How To : Check Your Android Phone's DPI Value to See the Screen Density

There are at least 24,000 different Android devices, and they all have varying hardware components. This is why many developers publish several unique variants of their apps, which, among other things, helps accommodate all of the different display sizes and resolutions on And ...more

How To : Fit More Content on Your Screen by Changing the Pixel Density on Your Android Device

Because of Android's massive array of supported smartphones that carry vastly different display sizes and resolutions, the operating system uses a value known as DPI to determine the size of icons and visual assets that will best suit a given screen. Pixel Density (or Dots Pe ...more

How To : Graph the probability density function in an Excel file

One of Microsoft Excel's capabilities is to allow you to graph Normal Distribution, or the probability density function, for your busines. This is a quick and easy tracking feature you can learn in just a few minutes.

How To : Explore Density, Viscosity & Miscibility with a Colorful Layered Liquid Science Experiment

Ever wonder why Jupiter has those colored bands across its surface? Jupiter's enormous mass is made from an array of different liquids, and those fluids do not play well together because of their different makeup. All of the hydrogen- and helium-based fluids are thought not to ...more

How To : Find density using the water displacement method

To find out the density of any given object there is a simple equation, mass divided by the volume equals the density. In this video a lady is showing how to get the volume of three objects using water. First the objects are measured on a scale to find out how much they weigh, ...more

How To : Determine the density of salt water

Everyone floats in the Dead Sea because the amount of salt in water effects the density. Do a hands-on experiment and practice checking density. Here’s a good science experiment to do in class or at home, if you have access to an electronic balance. The density of salt water ...more

How To : Make a colorful density bottle

Watch this video tutorial to see how to make a colorful density bottle. To do this science lab experiment, you'll need food coloring, a plastic bottle, clear baby oil and extra things to put into the bottle, like glitter or sparkles. Now, keep in mind, you can't drink this... ...more

How To : Calculate and solve for density

Density is a means of representing how much mass is contained in the body of an object. The basic formula is: Density (D) = Mass (M) / Volume (V) so D=M/V. Density is important to know for buoyancy and to understand how heavy an object is. This video will show you three exampl ...more

How To : Perform the activity density rainbow experiment

Check out this instructional science video that demonstrates the details about the activity density rainbow. From the Oregon Museum of Science and Industry's teacher curriculum, "No Hassle Messy Science with a Wow", this is an activity demonstrating liquids with different dens ...more

How To : Make a layered liquids decoration with different density household fluids

Ransack your kitchen and grab some dish soap, vegetable oil, honey, food coloring, rubbing alcohol, tall glass, water and a spoon. Why? Because you're going to create a visually stunning display of layered liquids. This illustrates the effects of different densities in liquids ...more

How To : Compare Coke and Diet Coke's density

Ever wonder how much sugar is in your soda? This simple experiment that anyone can do puts Coke and Diet Coke head-to-head in a density test.

How To : Compare buoyancy and density in a science experiment

This science video explains the relationship between buoyancy and density using hot air balloons, fish and cruise ships as examples of objects using buoyant force. This video tutorial also includes instructions for calculating the density of a rectangular prism and a liquid. I ...more

How To : Prune a high-density fruit tree

In this how-to video, Ed Laivo and Tom Spellman of Dave Wilson Nursery give you advice on how to prune high-density fruit trees as they look at Santa Rosa plums, pluots and nectarines in their own orchard. Watch this video to learn how to open your trees up for sunlight and ai ...more

How To : Find the density of an object

School yourself on density with help from this video courtesy of Kruse teacher. In this tutorial, get a quick demonstration on the subject of density, mass and volume. Also learn how to find the density of two different kinds of objects through the power of math!

How To : Teach your students the Density Song for science class

If your students are having trouble remembering how to calculate density properly, check out this video. In it, you will learn the lyrics to a very fun song that will help your kids with the equations and vocabulary. Follow along with Mr. Edmonds as he shows you his favorite s ...more

How To : Understand & calculate density

In this episode of Science Theater Dr. Carlson helps you understand the concept behind Density and how it relates to Mass and volume and how to calculate the Density of a substance if its Mass and Volume are known. The Density of various metals is demonstrated using aluminum, ...more

How To : Work with point density volumetrics in Blender 2.5

This clip offers a quick guide on how to work with point density volumetrics within Blender 2.5. This same technique can be used to make tornados, drifting fog, dry ice and a great number of other things. Were you aware Blender 2.5 includes a cloud generation script? See how t ...more

How To : Use neutral density or ND filters

Photography is a fast growing hobby with the relative drop in prices of high grade equipment. The use of different filters in photography is a very common thing, and different filters have very different uses. The neutral density (ND) filter reduces the amount of light reachin ...more

How To : Calculate density altitude when you are flying

In flight school, at some point or another you will be asked to determine your density altitude. In this professionally taught tutorial, lean how to calculate density altitude on a flight computer. This lesson is taught by an instructor from the Golden State Flying Club at Gil ...more

How To : Do exercises to increase muscle density for swimming

Increase muscle density by watching this two minute tutorial. Muscle density is important for keeping your body strong and active now and especially as you get older. While this video focuses on a density exercise that's geared towards swimmers, anybody can benefit from the s ...more

How To : Teach students a song to calculate irregular density

If your students are having trouble with density, check out this tutorial. In this entertaining video, teacher Mr. Edmonds goes through all the steps to find the density of an irregular solid object to the tune of "Afternoon Delight". This song should help your kids remember h ...more

How To : Experiment with double density

Can you guess which household liquids sink and which ones float? Play along with the A-TV science team in this video lesson! 1. Do a Liquids Mix Experiment: First thing you are going to do is take a glass beaker and pour some water into it. If you don't have a glass breaker, ...more

How To : Use graduated neutral density glass filters with digital and film SLR cameras

In this amazingly in-depth tutorial video they go into great detail on all of the methods of using GND glass filters, along with it's general purpose is and what it can do for you! For those not in the know, GND filters are glass lens attachments that come in graduated varying ...more

How To : Use neutral density gels to change light intensity

The SubStream's "Film Lab" provides valuable information for filmmakers, specifically cinematographers and gaffers, on how to use neutral density gels. Gels are used to change the quality or color of the light in a scene. Gels can come in many different sizes: they can extrem ...more

How To : Use gain and neutral density on a video camera

A common problem when shooting in low-light situations is that even if you open your lens to its lowest f-stop number, you're left with an image that's far too dark. One obvious remedy is to add more light. But what if you don't have more lights available to you? That's where ...more

Android Basics : How to See What Kind of Processor You Have (ARM, ARM64, or x86)

Starting with the release of Android Lollipop, the process of installing the Xposed Framework got a bit more complicated. Not only are there separate installers for each Android version, but now, you also need to know exactly what type of processor is in your device to make su ...more

How To : Make Soap Out of Guava Leaf Extract for a Science Investigatory Project

Unless you're a high-schooler building a nuclear fusion reactor, the hardest part of a science investigatory project often is coming up with a good idea. You want it to be cool yet feasible, novel but still useful. That's why Ai-ni Bautista's science project on making liquid ...more

How To : Change Your Android's Screen Resolution Without Root Access

When I first received my HTC One M8, I was in love with the 5-inch screen size, but the icons and font just seemed too big, wasting valuable screen real estate. Phablets, like the Samsung Galaxy Note 4, have only slightly larger screens, but don't seem to have this problem sin ...more

News : What Happens When You Mix Coca Cola and Milk

Interesting reaction coke and milk The reaction of phosphoric acid (V) to proteins in the milk - they are cut and causes a precipitate The reaction of phosphoric acid with calcium contained in milk gives rise to a precipitate 3Ca + 2H3PO4 ///\\\ Ca3(PO4)2 + 3H2 It is a reacti ...more

The Big Android Dictionary : A Glossary of Terms You Should Know

Android comprises an entire ecosystem of apps, games, functions, and features, so it would only make sense that it has its own lexicon. Words, phrases, and acronyms that didn't exist ten years ago are now used in an off-the-cuff style by developers and support technicians acro ...more

How to Hack Wi-Fi : Automating Wi-Fi Hacking with Besside-ng

Besside-ng is the hidden gem of the Aircrack-ng suite of Wi-Fi hacking tools. When run with a wireless network adapter capable of packet injection, Besside-ng can harvest WPA handshakes from any network with an active user — and crack WEP passwords outright. Unlike many tools, ...more

How To : Tweak Your Samsung Galaxy S3's Performance with These "Build.prop" Android Hacks

One of the best things about the Samsung Galaxy S3 is the ability to modify the device in countless ways, as with any other Android device. A recent guide on adding softkeys to the GS3 from mod Faisal inspired me to share some information on how to edit build.prop, which is y ...more

How To : Yes, You Can Make Frosting with Jello—And It's Amazing

Frosting, for many, is the best part of the cake. There's not much to dislike about it, after all—there's a type of frosting for every person. Whipped frostings for those who like it light, dense buttercream for indulgent sugar fans, cream cheese frosting for the tangy crowd.. ...more

How To : Make Perfect Poached Eggs, Every Single Time

Two slices of whole-wheat toast with lots of butter. Two eggs, poached to a firm yet custardy texture. The yolks should absolutely not be hard-cooked and the whites should be tender, not rubbery. That's my idea of the perfect breakfast. A golden, runny-but-not-liquid yolk, cre ...more

How To : The Specs That Really Count When Buying a Phone

When shopping for a new smartphone, you'll encounter comparisons and spec sheets that are filled to the brim with values like mAh, GB, and GHz. To the average consumer, however, these values are meaningless, so we end up looking at which device has the specs with the highest a ...more

News : iPhone X Roundup — Everything You Need to Know About Apple's 10th Anniversary Smartphone

Apple has something big in store for consumers in 2017 to mark the 10th anniversary of the iPhone. One major surprise is that Apple has decided to forgo on releasing a 7S in favor of a redesigned iPhone 8 and 8 Plus. To further commemorate its 10-year milestone, the Cupertino- ...more

How To : The 5 Best Phones for Streaming Videos from Netflix, Hulu, YouTube & Amazon Prime

For many, phones are starting to replace televisions as the primary device for watching videos. Thanks to their portability and easy to use apps, it's often simpler to watch Netflix, Hulu, YouTube, or Prime Instant Video on the smaller screen. But not every phone is suited to ...more

How To : Update to the New Gmail Look (And See What's Changed)

It's live! Google has finally unveiled the much-hyped makeover of their Gmail email service. As of yesterday, anyone who wants to update to the new Gmail look can, but in the coming days it will be forcefully pushed to Gmail users everywhere. If you enjoyed the look of the old ...more

How To : Everything You Know About Microwave Ovens Is a Lie

Chances are that you've been using your microwave just to nuke leftovers, but they can do so much more than heat up last night's dinner—microwaves can help you peel garlic more quickly, get more juice out of lemons, disinfect your kitchen, dry out herbs, give beauty products n ...more

How To : Boost Performance & Battery Life on Your Nexus 6 by Lowering the Display Resolution

The Nexus 6 is one of the few devices on the market that sports a 1440p "QHD" display. This means that the amount of pixels displayed is higher than almost any other smartphone, which sounds great on the surface, but is not without its drawbacks. For one, most apps and games ...more

News : iPhone 11 Pro & 11 Pro Max — Full Spec Sheet & Feature Overview

So the new iPhones have arrived. Like last year, Apple released three iPhones in three different sizes that vary in price and specs. There's the base model iPhone 11, and then there are the real deal, premium models, the iPhone 11 Pro and Pro Max. The iPhone 11 Pro and 11 Pro ...more

How To : Get an Android "Lollipop" Home Button That Doubles as a Battery Meter

With the new version of Android due out very soon, Android 5.0 "Lollipop" has received a ton of press lately. It's all well-deserved, of course, because the new "Material Design" interface is absolutely beautiful. While we've covered methods on how to get a little bit of that ...more

How To : Effortlessly Hack & Mod Your Samsung Galaxy Note 2 Using the Android Everything Tool

There are a ton of cool features available on your Samsung Galaxy Note 2, but if you're a softModder, you can make your phone do just about anything. Therein lies the problem…what do you want from your Android device? When you first start tinkering around, it can be troubles ...more

How To : 6 Easy Ways to Increase Battery Life on Your Android Device

Smartphones have otherworldly specs these days, so it's relatively uncommon that you hear someone complaining about display resolution, build quality, or general speed and performance. At best, these are secondary concerns, with the number 1 issue almost unilaterally being bat ...more

OLED vs. LCD : What You Need to Know About Displays Before Choosing an iPhone XS or XR

The new iPhone XR, XS, and XS Max have everyone buzzing. But, at first glance, the XR and XS look pretty similar in almost every way. So, what's the difference? It comes down to the XR's "Liquid Retina" LCD screen vs. the XS's "Super Retina" OLED display. How do they compare, ...more

How To : Create a bigger butt and hips using foam

Seldom does a woman want to increase her butt and waist size, but for those who work in theater, a big butt may just be a requirement for a role. However, faux butts and hips will generally rob your wallet of quite a steep amount of money, so why not make them yourself? All y ...more

How To : Hide the Home Bar on Android 10 — No Root Needed

With the new navigation gestures in Android 10, you reclaim a lot of screen real estate that used to be occupied by the back, home, and recent apps buttons. But there's still a small bar on the bottom edge of the screen, and in most apps, it still sits atop a black background. ...more

How To : 5 Things Cold Baths & Showers Can Do for You That Hot Ones Can’t

If you're anything like me, your day doesn't start until you've sloughed away your grogginess with a scalding hot shower. That perfectly-heated water can clear stuffed sinuses, relax the muscles, and make pretty much anyone feel squeaky clean. However, a cold shower can do eve ...more

How To : Boost Performance & Battery Life on Your Galaxy S5 with These "Build.prop" Hacks

The build.prop file in an Android device is home to many system-level values and settings. Everything from screen density to video recording quality is covered in this file, and people have been editing these entries to get new functionality and better performance since Androi ...more

News : Everything You Need to Know About the New iPhone SE (2nd Generation) in 2020

The original iPhone SE was, for some, the perfect iPhone. It brought back the popular one-handed form factor of the iPhone 5 but packed in the internals of the then-new iPhone 6S. Now, the second-generation iPhone SE is here for 2020, but can it live up to what made the first- ...more

How To : Build a real lava lamp

This is how to make a near professional grade lava lamp. We did this as a chemistry project. We perfected it in a week. This took many hours to do, as we had to get the density just right. We remade it three times, also. At the very end, we combined all of the wax into a huge ...more

How To : Save Battery Life on Android by Turning Off Pixels (No Root Required)

Many modern Android devices use a display technology called AMOLED. These screens differ from traditional LCD displays in that each pixel emits its own light, so a backlight is not required. Even better, when rendering a black element on the screen, AMOLED displays simply don' ...more

News : Everything You Need to Know About the iPhone XS Max

Three new iPhones means you have to make a choice: Do you go with the smaller iPhone XS, the larger iPhone XS Max, or the cheaper iPhone XR? There's lots to like about each model, but if you want to make an informed decision, it's time to learn what each has to offer. Here's w ...more

Ingredients 101 : Toasting Nuts Is a Necessary Evil & Here's Why

People tend to skip toasting nuts in recipes or before adding them to salads because it seems time-consuming and the margin for error is high. However, skipping this step is a big mistake. Why? Because when you skip toasting your nuts (go ahead, you can laugh, we're all doing ...more

News : Everything You Need to Know About the iPhone 12 Pro & 12 Pro Max, Apple's Camera Juggernauts for 2020

Apple has four iPhone models for the remaining months of 2020, but the most impressive ones are the iPhone 12 Pro and iPhone 12 Pro Max. While the iPhone 12 and iPhone 12 mini are great smartphones, the "Pro" models offer more advanced features, especially for photographers an ...more

How To : 47 Baking Hacks That You Shouldn't Live Without

Right now is that magical time of year when the general public decides to embrace their inner fattie and get baking in the kitchen. Hello, pies and cakes and cookies and everything carbs. Goodbye, diets—see you in the next year, when you cripple us with unbridled guilt and lon ...more

How To : These Are the Only Differences Between iPhone 14 Pro and 14 Pro Max

If you're looking to get a new iPhone 14 Pro or 14 Pro Max, which model should you choose? What makes the iPhone 14 Pro different than the 14 Pro Max? Find out. In the same vein as the iPhone 13 Pro and 13 Pro Max models, the 14 Pro and 14 Pro Max are identical except for a f ...more

How To : Make Sodium Metal

Sodium (chemical symbol Na) is an interesting element. It reacts in contact with both oxygen and water, and several sodium salts are used to produce a yellow color in fireworks. The metallic form has limited uses in chemistry, and is too soft and reactive to be used as a buil ...more

How To : Make a 4-Element Table with PVC Pipe

Now, I know what you're thinking... "I need an extra sexy coffee table that is like no other." OK, Maybe not. Maybe you're thinking, "I need a conversation starter that doesn't have to do with economic injustice, Left/Right political paradigms or health insurance. I need it ...more

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