Cómo realizar un gráfico 3/3: papel logaritmico

Graphing on Logarithmic Paper

Introduction to Logarithmic Graphing

• The video introduces the concept of graphing data pairs, specifically temperature versus pressure, using logarithmic paper.

• It emphasizes the importance of having both axes in logarithmic scales for effective data analysis.

Understanding Data Magnitudes

• The speaker explains that pressure data spans three orders of magnitude (units, tens, and hundreds), while temperature covers two orders (tens and hundreds).

• This significant difference in magnitudes necessitates the use of a logarithmic scale rather than a linear one for accurate representation.

Setting Up the Axes

• The logarithmic paper is divided into cycles; only two cycles will be used for plotting temperature and pressure.

• The first cycle will represent values from 10 to 100 (decades), while the second cycle will cover values from 100 to 1000 (hundreds).

Plotting Points on the Graph

• The speaker details how to mark points on the graph based on previously identified temperature and pressure values.

• Specific data points are mentioned:

• First point: (98.5, 1)

• Second point: (131.88, 5)

• Third point: (148.2, 10)

Analyzing Graphical Representation

• A visual inspection shows that plotted points form a straight line better than previous graphs with different scales.