Fluctuations Search Results

How To: Make an infrared heart sensor

This video shows how to create an infrared heart sensor using an Arduino controller, a couple of resistors, and an infrared light emitter and detector. This device will be used on the subject's finger, detecting the amount of blood which is flowing through the subject's finger. The amount of oxygenation of the blood is shown in the finger, which will cause the infrared light to reflect off the skin and to the transmitter which is close by. The fluctuations of oxygenation are picked up by the ...

Coinbase 101: Fees & Fine Print You Need to Know Before Trading Bitcoins & Other Cryptocurrencies

Coinbase is the primary go-to for many users when it comes to investing in Bitcoin (BTC), Ethereum (ETH), Litecoin (LTC), Ripple (XRP), and more, due to its user-friendly interface. But before you join them, know that the ease of use comes with a price. Coinbase charges fees for each transaction, and your bank might even add charges on top of that. Plus, there is some fine print to be aware of.

How To: Access Bitcoin Gambling Sites from Your Phone — Even if They Ban Your Country

Bitcoin, the decentralized cryptocurrency notorious for its status as the currency of the dark web, seems to be shedding its shady past and is now enjoying soaring highs not seen since 2014. The highly volatile online commodity reached parity with an ounce of gold back in March amid speculation of a pending ETF approval from the Federal Trade Commission. Since then, Bitcoin has doubled in value and analysts predict a bitcoin could reach $100,000 in value in 10 years.

News: Florida & Texas Could Become Zika Hotspots in the US

To much of the United States, Zika seems like a tropical disease that causes horrible problems in other countries but is nothing to be worried about stateside. It may make you rethink your beach vacation abroad, but not much more than that. However, if you live in Florida or Texas, the possibility of getting a Zika infection where you live is real — and local outbreaks are more and more a possibility.

Hydration Hacks: The Scientific Benefits to the Various Ways We Drink Water

We all know that it's important to drink water regularly throughout the day. After all, it has so many benefits, including flushing toxins out of the body and maintaining kidney health and good bowel movements. Turns out that's only part of the story. While being properly hydrated is key to maintaining overall health, it's also a big component of maintaining and even increasing cognitive ability. Plus, drinking enough water regularly can help you lose weight, if you know when to drink it and ...

How To: Log into Your Raspberry Pi Using a USB-to-TTL Serial Cable

Connecting to your headless Raspberry Pi on the go typically requires a network connection or carrying around bulky peripheral hardware like a screen and keyboard. With the help of an old-school connecting standard, though, you can log into your Pi from any computer using a simple cable. If you don't have a power source, you can also power your Linux distro over the cable at the same time.

How To: The Complete Guide on How to Build a Crystal Radio—Plus How They Work

There's a lot that goes into making a nice crystal radio set, so this is going to have to be broken down into two parts. The first part is the actual making of a functional radio, and the second part is making the whole arrangement look nice. In this part, I'm actually going to tell you more than just how to make a crystal radio, but I'm also going to explain how and why they work. Crystal radios are pretty Steampunk in and of themselves, since they were first developed in the late 19th centu...

How To: How Anyone Can Retire Early & Wealthy, Part 3: The Stock Market

If you've read Alex Long's last two articles in this series (Part 1 and Part 2), you know by now that making money rarely is risk free, and generally plays out to be a high risk-high gain/loss scenario. The best way to make money is to have money, so for this article, lets assume a financial backing of about $10,000 dollars. For the sake of simplicity, I'm going to be working with online trading systems in this article. Some stocks are traded on exchanges, where buyers meet sellers and decide...

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