University of Thessaly
Group number: 20 (Papadopoulou Aikaterini-Papaioannou Evangelia-Anna)
Day number: 87
Incubation: Dark

Winogradsky’s Column

Hello to everyone,

              Bellow we are presenting you the development of our experinment.

• 49^th day (9-5-16):

                                                               Figure 1                                                     Figure 2

• 52^th day (12-5-16):

                                                           Figure 3                                                     Figure 4

• 56^th day (16-5-16):

                            
                                                           Figure 5                                                       Figure 6
                                                                                       

• 59^th day (19-5-16):

                                                              Figure 7                                                      Figure 8

                                                                  

• 63^th day (23-5-16):

                                                    Figure 9                                                         Figure 10

 

• 66^th day (26-5-16):

                                                                     Figure 11                                                   Figure 12

• 70^th day (30-5-16):

                                                                    Figure 13                                                      Figure 14

                                                                                                                          

                                   

On the 49^th day of the experiment (Fig.1, Fig.2) no significant changes were observed in both the liquid phase and in the pellet compared to previous times. 

On the 52^th day of the experiment there was a decline of the crust on the surface (Fig. 4), while the 56^th and 59^th day (Fig. 6, Fig. 8) does not exist at all. In both of these measurements, the liquid phase showed a lighter color while the residue did not show any significant change (Fig. 5, Fig. 7). 

On 63^th day of the experiment the only change that was observed in the water column where the color became was darker (Fig.9) and the surface, where recurrence of the crust was observed (Fig.10). The reasons why we are seeing this phenomenon has been reported in a previous post. 

The 66^th and the 70^th day of the experiment (Fig.11, Fig.12, Fig.13 and Fig. 14) no significant changes were observed. All that appears to have little change was the water column, which had a darker color than the previous measurement. 
Notably the odor was relatively low in all the above measurements. 

            We will make a new announcement when something change.