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Survey of Nursing Staff's Meaning of Life, Positive Beliefs, and Well-being: A Cross-Sectional correlation Study
The Effectiveness Of The Friendly Health Literacy Materials Course In Improving Students' Health Education Ability
The representations and teaching applications of the double pendulum by resonance phenomena
不銹鋼管一端懸掛著兩個長 50 公分單擺串聯形成的雙擺,另一端懸掛著兩個具雙擺自然頻率的單擺。首先,輕推高頻單擺作為驅動力,雙擺以反對稱方式擺動;其次,輕推低頻單擺,雙擺則以對稱方式回應;接著,以任意方式推動雙擺,高頻單擺立即發生回應,產生共振,低頻率單擺響應很慢,但仍可持續幾個小時。在此,我們製作一個共振雙擺教具,在擺幅小的條件下,讓擺回到簡諧運動狀態,並以不鏽鋼管作為介質,讓兩個不同頻率的單擺與一個具兩個自由度和兩個自然頻率的雙擺產生共振現象,而初始條件決定此耦合雙擺在兩個自由度上的振幅