This is the third video of yours I have seen. Best audio quality so far, did not need headphones. There was some blurriness when objects were presented close to the camera but nothing that hindered the quality of instruction.

Thank you

This helped me a lot for my exams

Great video but the volume was so low, I had to enable the CC

Thanks ... it realy helped me !!!

Thank you George

thanks~

Thank you. Would you kindly review the Sechrist ventilator? Thanks

Is it ok to hook a Nitric/InoVent O2 hose to the underside of a blender? For example, NICU patients? Or always hook it to 100% FiO2.