deletions | additions       diff --git a/img/4umCB_1000nm.png b/img/4umCB_1000nm.png  new file mode 100644  index 0000000..31461af  Binary files /dev/null and b/img/4umCB_1000nm.png differ diff --git a/img/4umCB_1100nm.jpg b/img/4umCB_1100nm.jpg  deleted file mode 100644  index ab24f16..0000000  Binary files a/img/4umCB_1100nm.jpg and /dev/null differ