When a high-intensity laser interacts with plasma, the charged particles typically oscillate back and forth like waves on the ...

Abstract: Pulse position modulation (PPM) is a popular signal modulation technique which converts signals into M-ary data by means of the position of a pulse within a time interval. While PPM and its ...

A new neural implant is so small it can rest on a grain of salt, yet it can track and wirelessly transmit brain activity for over a year. It’s powered by laser light that safely passes through tissue ...

Abstract: In this letter, we address two questions concerning the application of multipulse pulse-position modulation (MPPM) for free-space optical (FSO) communications: (1) under what condition would ...

Harvard astrophysicist Avi Loeb has made a kind of second career out of being the person in the room who refuses to leave “aliens” off the table. With 3I/ATLAS, only the third confirmed interstellar ...

Is 3I/ATLAS following its heart? Harvard scientist Avi Loeb believes that 3I/ATLAS boasts a “heartbeat”-like pulse that could provide evidence of its artificial origins — potentially even pointing to ...

Assessing the efficacy of state-of-the-art treatments of eye diseases necessitates the development of - tools to monitor retinal function in a noninvasive, noncontact, rapid, and quantitative manner.

The history of the 555 timer. What are the 555's modes of operation? About my book to help teach those young and old about 555 timers. element14’s 555 timer contest. The 555 timer celebrated the 51st ...

With the development of the Internet and microgrids technology, a single microgrid is no longer able to meet existing energy needs. In order to improve the reliability of large-scale power supply, sub ...

In order to achieve underwater wireless dynamic optical communication, a laser communication system is proposed based on Pulse Position Modulation (PPM). In order to achieve underwater laser ...