Tag Archives: Science

Stacked bar chart showing number of orbital launches by year

The stacked bar chart below shows the number of manned and unmanned orbital launches by year. After dipping in the early 2000s, the number of launches is increasing due to a growing number of private launches (e.g. SpaceX).

Orbital launches by year in stacked bar chart

Bar chart showing the number of manned and unmanned orbital launches between 1957 and 2017

This chart was built using the Aploris add-in for PowerPoint on a Mac.

When the longest prime numbers were discovered

The line chart below shows when the longest prime numbers were discovered. Because the lengths vary greatly, a log axis is used.

The longest known prime number was discovered on Dec 26th, 2017 with a length of 23,249,425 digits, nearly 1 million digits longer than the previous record. The accelerated discovery of prime numbers is largely due to computing power and distribute computing projects like GIMPS.

Line chart showing longest prime numbers and when they were discovered

Line chart showing when the longest prime numbers were discovered

This chart was built with the Aploris add-in for PowerPoint on a Mac.

Scatter plots exploring relationship between heart rate and lifespan across different mammals

The scatter plots below examine the relationship between a mammal’s resting heart rate and its lifespan. The chart on the left compares heart rate to longevity of life span in years and the chart on the right compares heart rate to total lifetime heart beats. For both charts, log x and y axes are used to help make the relationships clear and to span the large scale. From the left chart we can see that there is an inverse relationship between longevity and heart rate.  However, a visual inspection of the right chart shows that lifetime heartbeats and heart are largely unrelated.

Scatter plots showing relationship between mammal heart rate and lifespan

Scatter plots showing relationship between heart rate and longevity/lifetime heart beats across different mammals

These charts or graphs were built using the Aploris add-in with the latest 64-bit release of PowerPoint for Mac. Aploris is a data visualization add-in for Mac and PC that helps PowerPoint users build better charts.