People stand in front a large aquarium. Fishes and sharks swim in it.

Middelbareschoolniveau, Natuurkunde, Werkcollege

Waarom is glas doorzichtig?

Als alle dingen uit moleculen bestaan, waarom kan licht door sommige dingen heenschijnen? Waarom is glas doorzichtig? Lees verder Waarom is glas doorzichtig?

<img data-lazy-fallback="1" alt='' data-srcset='https://secure.gravatar.com/avatar/cbcecb45c5c7e8996a2629dfe722f31c?s=40&d=mm&r=g 2x' height='20' width='20' decoding='async' data-src="https://secure.gravatar.com/avatar/cbcecb45c5c7e8996a2629dfe722f31c?s=20&d=mm&r=g" class="avatar avatar-20 photo lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img data-lazy-fallback="1" alt='' src='https://secure.gravatar.com/avatar/cbcecb45c5c7e8996a2629dfe722f31c?s=20&d=mm&r=g' srcset='https://secure.gravatar.com/avatar/cbcecb45c5c7e8996a2629dfe722f31c?s=40&d=mm&r=g 2x' class='avatar avatar-20 photo' height='20' width='20' decoding='async' />

KJ Runia2020-09-212020-09-22

A modern kitchen with a microwave oven. Is the radiation of a microwave oven unhealthy?

Middelbareschoolniveau, Natuurkunde, Werkcollege

Is straling van magnetrons schadelijk voor de gezondheid?

We bespreken elektromagnetische straling en waarom ioniserende straling gevaarlijk is. We bespreken hoe een magnetron voedsel verhit, evenals vitaminen. Lees verder Is straling van magnetrons schadelijk voor de gezondheid?

<img data-lazy-fallback="1" alt='' data-srcset='https://secure.gravatar.com/avatar/cbcecb45c5c7e8996a2629dfe722f31c?s=40&d=mm&r=g 2x' height='20' width='20' decoding='async' data-src="https://secure.gravatar.com/avatar/cbcecb45c5c7e8996a2629dfe722f31c?s=20&d=mm&r=g" class="avatar avatar-20 photo lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img data-lazy-fallback="1" alt='' src='https://secure.gravatar.com/avatar/cbcecb45c5c7e8996a2629dfe722f31c?s=20&d=mm&r=g' srcset='https://secure.gravatar.com/avatar/cbcecb45c5c7e8996a2629dfe722f31c?s=40&d=mm&r=g 2x' class='avatar avatar-20 photo' height='20' width='20' decoding='async' />

KJ Runia2019-07-072020-07-02