Recent content by Daystar

Regarding miscibility, one of the main considerations is the polarity of the molecules. For example water molecules are polar and tend to stick to each other. Oil molecules are not polar and generally will ot stick to water so the two liquids are immiscible. Most gas molecules are non polar so...

You could narrow the options by measuring the density. Weigh the object then get a large measuring jug graduated in ml or cm3. Put enough water in the jug so that when you put the object in it will be completely submerged but the jug does not overflow. Measure carefully the before and after...

Going back to fizixfan's first post and diagram, there were some comments about the solstices and equinoxes. I think that in that first diagram the solstices should be where the equinox labels are and vice versa. By the way why is fizixfan's name now struck through? Has he left the group?

I used to manage a plant that made isopropyl alcohol (IPA) or isopropyl to give it its more up to date name. Then I moved on to market IPA along ewith other solvents. IPA has many uses in pharmaceuticals, cosmetics, paints and adhesives. It is also used as windscreen de-icer and in very large...

This is my "map" of the solar system with the orbits to scale. I have included the orbits of eight planets plus that of Pluto and the parts of Eris' orbit that falls into the frame. I will add some labels and a wire coming out of the map to indicate the passage of the system around the centre of...

Hi all. I wanted to make a large scale map of the solar system with all the orbits from Mercury to Pluto to scale on the same sheet. I'll try to get pieces of the orbits of Makemake, Haumea and Eris on the edges too. All the images I had seen showed either the inner system or the outer system...