Comments on: Make a non-toxic lava lamp at home http://sciencecafe.org/content/2009/01/06/make-a-non-toxic-lava-lamp-at-home/ Fun science for everyone Mon, 21 Nov 2011 06:39:06 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Jobbörse Ralf http://sciencecafe.org/content/2009/01/06/make-a-non-toxic-lava-lamp-at-home/comment-page-1/#comment-33359 Jobbörse Ralf Thu, 28 Jul 2011 12:27:40 +0000 http://sciencecafe.org/blog/?p=174#comment-33359 I tried this "experiment" and now I'm the new star at my working place with this cool lava lamp! Additionally I'm pretty impressed, that it is supposed to last that long! Thank you so much for this very very cool chemistry, even my son who's in 9th grade and actually hates both chemistry and physics was quite fascinated! I tried this “experiment” and now I’m the new star at my working place with this cool lava lamp! Additionally I’m pretty impressed, that it is supposed to last that long! Thank you so much for this very very cool chemistry, even my son who’s in 9th grade and actually hates both chemistry and physics was quite fascinated!

]]> By: Carl http://sciencecafe.org/content/2009/01/06/make-a-non-toxic-lava-lamp-at-home/comment-page-1/#comment-18680 Carl Wed, 09 Mar 2011 23:15:13 +0000 http://sciencecafe.org/blog/?p=174#comment-18680 The lava lamp will last for quite some time - but I don't have a hard number. I've used one at work for several months, so maybe I've dropped in 20 or so tablets and it still looks good. The water at the bottom may start to look cloudy, but the oil will clear up once it sits for a while. It's an interesting question though. I think I may try to see just how many tablets can be dissolved in the water before the solution stops fizzing - if that is even possible. In anycase, if you do reach the limit, or the water starts to look funky, you can always pour off the majority of the oil into a new container and add fresh water. Carl The lava lamp will last for quite some time – but I don’t have a hard number. I’ve used one at work for several months, so maybe I’ve dropped in 20 or so tablets and it still looks good. The water at the bottom may start to look cloudy, but the oil will clear up once it sits for a while. It’s an interesting question though. I think I may try to see just how many tablets can be dissolved in the water before the solution stops fizzing – if that is even possible.

In anycase, if you do reach the limit, or the water starts to look funky, you can always pour off the majority of the oil into a new container and add fresh water.

Carl

]]> By: london behrens http://sciencecafe.org/content/2009/01/06/make-a-non-toxic-lava-lamp-at-home/comment-page-1/#comment-18676 london behrens Wed, 09 Mar 2011 22:27:33 +0000 http://sciencecafe.org/blog/?p=174#comment-18676 how long does this last? how long does this last?

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