Blood Pressure and Frosty Ice Crystals

Bit of a rush first thing. This morning Penny had her blood pressure checked. We were booked in for 9.10 a.m. so I left here about 8.30 and took the main roads for a change. Mainly as they were more likely to be ice free and they were. It took a while for the vet to get a reliable BP result while I sat in the car outside twiddling my thumbs. Result - all back to normal levels so we continue with the four tablets every day. Fortunately they are all taken in one session. As they are very small they are easily hidden in her favourite food. Next BP check will be in three months time.

When we returned I could see there was plenty of frost in the areas where the Sun doesn't reach this time of year so I put some under the microscope. A couple of shots:





This time I not only remembered to choose the finest resolution but also chose a 2 second delay between pressing the button and the photo being taken. That gives any vibration time to settle down.

Ice Bubbles

I noticed a plantpot saucer I had left outside had what appeared to be interesting thin ice crystals in the frozen water,



Just the subject for another session with the LCD microscope







This time I remembered that the pixel size for photographs needs setting every time the microscope is switched on.

On further thought these appear to be air bubbles frozen in the ice. The bubbles form as air which is dissolved in the water is released as the temperature drops and gets surrounded by frozen water.