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Hace 1 hora · Listen • 1:00. TRANSCRIPT: For South Carolina Public Radio, I'm Dr. Rénard Harris from the College of Charleston. This is Teachable Moments, a minute of education for students and parents. This summer, many students are spending their days at the beach instead of the classroom. While soaking up the sun can boost our vitamin D, exposure to ...
Hace 13 horas · Sun. The Sun is the star at the center of the Solar System. It is a massive, nearly perfect sphere of hot plasma, [18] [19] heated to incandescence by nuclear fusion reactions in its core, radiating the energy from its surface mainly as visible light and infrared radiation with 10% at ultraviolet energies.
1 de jun. de 2024 · Several studies report an increase in the sensitivity of piezoelectric composites when increasing composite thickness [1,2,3,4,5,6].The increase in sensitivity slows with sensor thickness and at values (>200 \(\upmu \) m) it starts to stagnate. Many commercial thin piezoelectric sensors have also a typical thickness of around 200 \(\upmu \) m, which seems to be an optimum choice for good ...
1 de jun. de 2024 · Piezoelectric sensors are dynamic sensors and their performance is usually measured by applying dynamic loading [].Quasi-static in some literature is referred to as frequencies below a few hundred Hertz [], far below the first eigenfrequency where inertial forces become important.While static loading can be used to measure piezoelectric coefficients [16, 17], thermal drifts and charge ...
Hace 13 horas · Untuk pengetahuan korang, baru-baru ini Jabatan Meteorologi Malaysia (MET) telah mengumumkan tentang kepanasan melampau serta peningkatan indeks UV di Malaysia. Katanya ramalan cuaca panas ini akan berterusan. Walaupun korang tau yang cahaya matahari ni kaya dengan vitamin D tetapi sinaran ultraviolet (UV) yang dipancarkan boleh mengundang risiko kepada penjagaan diri terutama sekali dalam ...
Hace 13 horas · The proper balance of ultraviolet light (including UVA and UVB), visual light and infrared light (heat) in one easy-to-install bulb makes the Exo Terra Solar Glo the choice of professional breeders. The Solar Glo is a full spectrum light with carefully tuned peaks to ensure appetite, activity, brilliant colours, and calcium absorption through Vitamin D3 production, and above all to prevent ...
