From 6786769ea3982f5ba77f149556f01a284a779dd6 Mon Sep 17 00:00:00 2001
From: Camron Blackburn <camron.blackburn@cba.mit.edu>
Date: Mon, 6 Apr 2020 22:09:23 -0400
Subject: [PATCH] Update README.md

---
 README.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/README.md b/README.md
index 4aa2f9a..1cfc9ac 100644
--- a/README.md
+++ b/README.md
@@ -86,6 +86,8 @@ also, I tried measuring evaporated solution on a few microscope slides and the s
 but can see the particles in the Olympus microscope 
 ![](100nm_gold_particles.jpg)
 
+### spectrophotometer
+Implen NP80 nanophotometer picks up 100 nm Au particles! simplest relative measuring technique 
 
 ### Resources
 [^DIYmask]: University of Cambridge [DIY mask efficacy testing](https://www.researchgate.net/publication/258525804_Testing_the_Efficacy_of_Homemade_Masks_Would_They_Protect_in_an_Influenza_Pandemic)
-- 
GitLab