What IEC 62471? IEC/EN 62471 gives guidance for evaluating the photobiological safety of lamps and lamp systems including luminaries. What is Photobiological safety? The photobiological…
What happened to Lewiscraft? Some information may no longer be current. TORONTO – National craft supply retailer Lewiscraft Corp. could close 10 of its 90…
What is the Centre consortium? An Independent, Member-based Consortium Founded by Coinbase and Circle in 2018, the mission is to provide the governance and standards…
What does slip-on mean? Definition of slip-on : an article of clothing that is easily slipped on or off: such as. a : a glove…
What are the three types of catheterization? There are 3 main types of catheters: Indwelling catheter. Condom catheter. Intermittent self-catheter. What is a Coudé catheter…
How do I add a user to a Samba group? Here’s what you do. Open up a terminal window on your Samba server (or just…
How are O-ring sizes specified? O-rings are measured in millimeters. Determine the inside diameter. Use a ruler or calipers to measure from one inner edge…
What is a multi-pitch rappel? The basic idea of multi-pitch rappels is this: You’re at the top anchor of a climb. You rappel down to…
What diameter is a number 4 wood screw? As a handy coincidence, the Gauge (imperial) roughly equals the screw head size in millimetres. A 4…
Where are bettas natural habitat? Asia Betta fish are native to Asia, where they live in the shallow water of marshes, ponds, or slow-moving streams.…