How to Build a DIY Double Water Drip System for High Speed Photos

In 2002, a renegade science photographer, Martin Waugh, was playing with high-speed photography and discovered he could image two drips of water hitting each other. This special event takes place under special conditions; when a single drop hits a water surface and rebounds up in perfect timing for a second falling drip to collide with the first at its peak of rebound. Martin decided he had to build a special computer controlled dripper to make these collisions and explore the topic photographically. Martin’s drips went viral on the Internet and became the inspiration for numerous arts today. Several companies like Mumford Time systems and Cognisys Inc. make special systems just for this double drip photography. In this article I will explain how you can make your own. For this project I made a stand for the dripper that was more complicated than needed since I plan on using it for a number of demonstrations with students and need it easily adjusted. I like using 11 layer plywood; sold for cabinets and fine woodworking. This material is 5/8 inches thick. This wood is quite stable, free of voids, and is a lot easier to work with than machining metal. Over the years, this plywood ...

Choosing Between Barb Fittings and Push-Quick Fittings

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them. Informa PLC’s registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726. When setting up a network of controllers and actuators controlled by pneumatics, designers and engineers have options as to what fittings will be used on the various components. Here are a few things they should consider when deciding between barb fittings and push-quick fittings for specific applications. Tubing size: The first thing to consider is tubing size. Barb fittings are measured by tube I.D. (inner diameter), while push-quick fittings are measured by tube O.D. (outer diameter). If the tubing is already in place or decided upon, be sure to match the tubing to the appropriate fitting for a tight seal.  Mechanical Valve A PQM-BT plastic branch T push-quick fitting from Clippard. Frequency: Next, consider how frequently the hose will be connected and disconnected from the fittings. If you plan to disconnect and reconnect hoses frequently, push-quick fittings are a good choice because they will make this easier. If you plan to set up your syste...