Zwei oder mehr Kreise (oder Kugeln) mit unterschiedlichem Durchmesser, aber gleichem Mittelpunkt sind konzentrisch zueinander.
In addition to essential cookies, this website also uses non-essential cookies whose purpose is to analyse website traffic or personalise your user experience. You can consent to the use of non-essential cookies (Google Analytics performance cookies and YouTube marketing cookies), as specified in art. 6, section 1, sentence 1, lit. a GDPR by moving the sliders at the bottom to green or by clicking the Allow All Cookies button. Please note that should you consent to the use of cookies by Google Analytics and YouTube (both are services from third-party provider Google Ireland Limited, Google Building Gordon House, 4 Barrow St, Dublin, D04 E5W5, Ireland), Google might process the data in the US and therefore outside the jurisdiction of EU law. According to the European Court of Justice, there is currently no “adequate protection” to EU standards of personal data processed in the US. In particular, there is a risk that your data may be processed by US authorities for monitoring and control purposes and that you may not have any legal recourse to object to these measures. If you consent, Google will use information to analyse how you use our website in order to draw up reports on website traffic and provide us with further services related to the use of the website and the internet. Google can also combine the usage data with information and personal data from other Google services, such as search histories, personal accounts, user data from other devices, and any other data Google has about the user, and process it for Google’s own purposes to create comprehensive user profiles. If only essential cookies are used, the data will not be forwarded to, or processed by Google. You can find more information in our Privacy Policy (clause 5 et seq. cookies/analysis tools and plug-ins) . You can revoke or modify your consent to the use of non-essential cookies in the cookie settings there or at the bottom of our page. We would be delighted if you could help us to improve our offering for you and other interested parties by giving your consent to us processing your data.
Essential cookies help make using a website possible by enabling basic functions such as page navigation and access to website forms. The website cannot function properly without these cookies.
Marketing cookies are used to track visitors on websites. The purpose is to show ads that are relevant and appealing to each visitor and which are therefore more useful for publishers and third parties engaged in advertising.