Recall that 𝑛 = 1 a i r, so we are saying that 𝑛 > 1. This is generally the case for glass prisms. When a ray of light enters the prism, the change in refractive index means that, rather than passing straight through, the light will be bent, or refracted.

Solution The mixture of acetone and chlorophorm shows negative deviation. In this type, the vapour pressure of non ideal solution is less than the partial pressure of the components if they form ideal solution too. ΔHmix<0.

1. First, we need to understand what is meant by deviation in a mixture. Deviation refers to the difference in behavior of a mixture compared to what would be expected based on the behavior of its individual components. Step 2/6 2. Ethanol and acetone are both polar molecules, meaning they have a partial positive and partial negative charge.

The normal axis is from +90° to -30°. The below is a quick summary of common lead findings and their respective heart deviations. EXAMPLES OF NORMAL AXIS DEVIATION Below are examples of EKGs that have normal axis deviation. Remember if leads I and aVF are both positive you can conclude that the axis is normal (and Lead II will be positive always).

Introduction. QRS axis deviation can be easily determined in electrocardiograms (ECGs). Although left axis deviation is often an age-related physiological change 1 – 3, it may indicate the presence of various conditions, such as left ventricular hypertrophy 4, left anterior fascicular block 5, inferior wall myocardial infarction 6, emphysema 7, and mechanical shift due to elevated diaphragm.

Block in the posterior fascicle causes left posterior fascicular block (LPFB). In case of a fascicular block, the wall/walls without fascicular supply will depend on impulses spreading from the other part of the ventricle (where the fascicle is intact). Figure 1.

One of the utmost clinical problems related to hemiblocks is that they can mimic or hide a myocardial infarction or a myocardial ischemia, left ventricular enlargement, or hypertrophy, or they can disguise or conceal a right bundle-branch block (RBBB). Anatomy of the LBB: The Middle or Septal Fascicle

What is an ECG? Before interpreting an EKG, it is important to know what an EKG is and its importance. An EKG/ECG is a representation of the electrical activity of the heart muscle as it changes with time, usually printed on paper for easier analysis. The EKG/ECG is a printed capture of a brief moment in time.