13. Example #7 showing failure rate with exponential equations. Collection: Early 20th Century Engineering Lantern Slides Date: undated Format: Image Agent: unknown
14. Example #6 showing failure rate with exponential equations. Collection: Early 20th Century Engineering Lantern Slides Date: undated Format: Image Agent: unknown
15. Exponential equations Collection: Early 20th Century Engineering Lantern Slides Date: undated Format: Image Agent: unknown
16. Exponential equations Collection: Early 20th Century Engineering Lantern Slides Date: undated Format: Image Agent: unknown
