Scientists at MIT have developed tiny wireless antennas that use light to detect tiny electrical signals in liquid environments. The technology is helping to understand how cells communicate and could contribute to a deeper understanding of biological processes, more effective disease diagnosis and the development of new therapies. Monitoring the electrical signals sent by cells is crucial to understanding how organisms function at the molecular level. Previous methods required wires connecting...

Choosing the right antenna is a key issue in any TV system. When looking for a suitable model, the following factors should be taken into account – gain, directivity, mounting location, built-in signal amplifier and the band for which the antenna is tuned. Of these five factors, the primary and most important parameter in selecting a DVB-T2 antenna is antenna gain. Energy gain is a measurable parameter and is most often given in the unit dBi. In simplified terms, it is how much more “better” a g...

The following diagram shows a Hikvision IP video intercom system installed in a guesthouse, whose parking lot is divided into two zones: A and B. The parking area A and the part of the guesthouse reserved for guests, includes the M2 monitor door station SB(A1) operating wicket F(A1) and entrance gate B(A1) and door station SB(A2) operating door D(A2). The parking zone B and the part of the guesthouse for guests includes the M1 monitor, SB(B1) door station for the F(B1) wicket and B(B1) entrance...

For outdoor systems it is necessary to use outdoor or universal cables. The following are the most important features of both types of cables so that the final choice can be made.

P2P cloud typically allows partial access to devices from the network. Using an app on a phone or computer, it is possible to get encrypted live view, play archive recordings, handle alarm notifications and basic device configuration.