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Abstract: The helical antenna is proposed for application in Radiosonde. The frequency of radiosonde is 403 MHz or 1680 MHz. In this paper, advancement in the basic design of helix which extends to ...

You can even track yoga, martial arts, Pilates, and Tai Chi. For each workout, the watch records the time, distance, calories burned, and other data to monitor your progress. In 2025, Apple added a ...

Athletics is one of the most-watched sporting events at every Olympic Games. Eight-time gold-medallist Usain Bolt almost always lit up the track with his blistering pace, while the slow-burn 5000m and ...

Estimating the Mediterranean sea-level trends from 1993 to 2022 showing the consistency of X-TRACK-L2P coastal altimetry with tide gauge data and trend impacts on Egypt's northern coast Mohamed M.