Researchers at Tufts University have developed a novel paint that changes colour depending on the force of the impact enabling precise demonstration of impact location and force without the use of electronics. The key element is microscopic particles with a core of polydiacetylene, which changes from blue to red under mechanical stress. The surrounding silk fibroin coating stabilises the structure and allows the reaction threshold to be adjusted, so that the paint only reacts to actual impacts ...

A gateway is a network device that acts as a transition point from one network to other networks. A host sends to the default network gateway (specifically, to the IP address of the network gateway) all packets directed to other hosts outside the local network, which means that a host without a given default gateway address can only exchange packets with computers on the same local network. With the proliferation of TCP/IP networks, the concept of a network gateway has become virtually identica...

The TRISET-302 cable family is a series of high-quality RG-6 coaxial cables designed for the transmission of DVB-T2 and DVB-S/S2 satellite signals. They are characterised by low attenuation, high resistance to interference and robust construction, making them an ideal choice for small domestic and professional collective installations. They are Tri-Shield cables, with an A+ shielding class and a 1.02 mm copper core. The range includes indoor cables with different reaction to fire classes: TRISE...

Often there is a need to replace an existing (video) intercom system with a newer one that offers greater capabilities. This type of upgrade may require the replacement of cabling, e.g. to twisted pair in the case of IP systems. A Hikvision video intercom operating in the 2-wire standard, so-called 2-Wire IP, which has the same functionality as the Hikvision 2nd generation IP video intercom, comes to the rescue here. The construction of a small system consists in connecting monitors (e.g. G7401...