Technology at Bay

Illustrate the mechanism for ozone destruction by CFCs. The sun emits different types of wavelength, among those, we have UV light (Ultra violet light). The UV light would be very damaging if it were to come in contact with us including damaging the DNA and giving sunburns. Figure 1 types of ultra-violet radiation penetrating into the earth’s atmosphere and ozone layer. As shown in figure 1, we are protected by a layer of Ozone which accumulates in the upper atmosphere of the earth and absorbs the UV radiation (UVB and UVC) before it reaches us. Stratospheric ozone (O_3) is produced by the combination of an oxygen atom (O) with an oxygen molecule (O_2).  O_3+ UV => O + O,UV light strikes an oxygen O_2 molecule, splitting of the O atoms O+O_3↔O_2,O_2  reacts with O to form O_3, since its reversible, UV light also splits O_3to O_2+O In the upper atmosphere, allotropes of oxygen exist. They include O_3, O_2and o. They are all in equilibrium with each other hence they interconv...

 If you just powered on your pc and windows gets stuck at the logo screen with infinite loading, no worries, we will just fix it up. Method 1  uninstall graphic drivers or Update windows Restart your pc and press (del) delete key to go to BIOS. if this does not work try pressing  F2,F4,F8 or F10 depending on the model of your motherboard. In the BIOS look for the optimized defaults, load it up and save the settings and exit BIOS. for those who cant load up bios, remove the CMOS battery, wait for 5 minutes and return it . then power the pc up. then now boot to safe mode in order to uninstall 1. Uninstall graphics card driver 2. anything suspicious 3. or even just update windows 10  To do this just interrupt the normal boot process 3 consecutive times. To do this  while booting, long press the power button then press the power button to load it back on. On the fourth time, when windows enters the Automatic repair mode, just wait for it to load.  When it enter...