Mohs Hardness Scale helpful chart
This shows a lot of helpful data in one simple-to-read chart. I also love how it relates hardness to everyday things we can understand like “fingernail” or “copper coin.”
This shows a lot of helpful data in one simple-to-read chart. I also love how it relates hardness to everyday things we can understand like “fingernail” or “copper coin.”
If you went back several hundred years with these equations, you’d be considered the smartest person on the planet.…
By “stacking bags” this chart makes a standard bar-chart into something more fun!…
This ad is a little confusing, it sort of “implies” you can build a 7 bedroom house for $759 to get your attention. This ad is actually for a “plan …
This 1979 ad for Jeno’s Pizza Rolls has a strong call to action to write in (a physical letter) to Jeno, and he’ll send you back a recipe booklet. What’s …