Usa "impingement" in una frase

1. Thus, the constant impingement of heat and cold on air and water, both containing oxygen and hydrogen, would have come to impact upon the chemistry of them both in the climatic laboratory

2. After her first burst of disappointment Joan began to take the mishap as she had taken Tess's original trouble, as she would have taken a wet holiday or failure in the potato-crop; as a thing which had come upon them irrespective of desert or folly; a chance external impingement to be borne with; not a lesson