Posted On: March 19th, 2023 | By: Dr. Ron Lasky

Calculating the Mass Fraction of Gold in a Gold Alloy

Adriana writes, "Dear Dr. Ron. I’m trying to program the equation for determining the weight fraction of gold in scrap metal from the densi...

Posted On: February 27th, 2023 | By: Dr. Ron Lasky

P Value Calculator for F Statistics

Folks, In my last post, I discussed an Excel® spreadsheet to calculate p values for hypothesis tests in which the t distribution is employed. The ...

Posted On: February 21st, 2023 | By: Dr. Ron Lasky

Calculating the p Value from the t Value

Folks, With small sample sizes, say less than 200, the Normal Distribution needs a correction. William Sealy Gossett discovered this correction, while...

Posted On: February 1st, 2023 | By: Dr. Ron Lasky

Response-to-Pause: A Critical Solder Paste Parameter

Folks, Solder paste is arguably the most highly engineered material in electronic assembly. It has many properties that must be favorable for its good...

Posted On: January 3rd, 2023 | By: Dr. Ron Lasky

Minimizing Graping

Folks, This post is an excerpt on graping, from Indium Corporation's The Printed Circuits Assemblers Guide to Solder Defects. Intr...

Posted On: December 19th, 2022 | By: Dr. Ron Lasky

Join Me at SMTA Pan Pacific 2023 to Learn about the Twin Paradox

Folks, Although my PhD is in materials science, my BS was in engineering physics. While getting my BS, I studied Einstein’s special theory of re...

Posted On: December 5th, 2022 | By: Dr. Ron Lasky

Have You Been Keeping up with The Adventures of Maggie Benson?

Folks, Two of the workers at Ivy-Benson electronics just got engaged and they are on their way to a factory in Mexico to see if their boss Maggie Bens...

Posted On: November 14th, 2022 | By: Dr. Ron Lasky

Minimizing Tombstoning

Folks, This post is an excerpt from Indium Corporation's The Printed Circuits Assemblers Guide to Solder Defects. Introduction: Printed...

Posted On: October 24th, 2022 | By: Dr. Ron Lasky

Workshop at SMTAI: Defeating Defects

Folks, I am presenting a workshop on Defeating Defects at SMTAI on October 31. This workshop is based on the recently published booklet The Printed Ci...