#Petheadz – is an Instagram series by Zach Rose, a 23 year old photographer/filmmaker from Toronto. (Photo by Zach Rose)

Do tears of joy look the same as ones of woe—or ones from chopping onions? In “The Topography of Tears,” the Los Angeles-based photographer Rose-Lynn Fisher explores the physical terrain of one hundred tears emitted during a range of emotional states and physical reactions. Using a Zeiss microscope with an attached digital camera, she captures the composition of tears enclosed in glass slides, magnified between 10x and 40x. “There are many factors that determine the look of each tear image, including the viscosity of the tear, the chemistry of the weeper, the settings of the microscope, and the way I process the images afterwards,” she says.

Veterans of the Bangladesh war of liberation march past during the celebration of the country’s 45th Victory Day at the national parade ground in Dhaka December 16, 2015. (Photo by Ashikur Rahman/Reuters)

Russian soldiers dressed in Red Army World War II uniforms attend a rehearsal for the Nov. 7 parade in the Red Square with Spassky Tower in the background, in Moscow, Russia, Friday, November 6, 2015. The parade marks the 74th anniversary of a November 7 parade on Red Square when soldiers went directly to the front during World War II. For decades Nov. 7 was a holiday celebrating the 1917 Bolshevik Revolution. (Photo by Ivan Sekretarev/AP Photo)

A woman is helped with adorning her hair with jewelry, part of the traditional clothing known as “Pollera”, before the annual Thousand Polleras parade in Las Tablas, in the province of Los Santos January 10, 2015. According to local residents, the Pollera dates back to the 18th century and was worn by the Spanish lower classes. Today, it has become the Panamanian national costume. The dress is made entirely by hand and the jewellery worn is pure gold and worth thousands of dollars. (Photo by Carlos Jasso/Reuters)

Miss Ohio Mackenzie Bart displays her shoe during the Miss America Shoe Parade at the Atlantic City boardwalk, Saturday, September 13, 2014, in Atlantic City, N.J. (Photo by Julio Cortez/AP Photo)

Iraqi security forces vehicles take part in a military parade in the streets of Baghdad, Iraq July 12, 2016. Social media activists posted images of tanks, armored vehicles, cannons, soldiers, police officers, and PMF members in Saadoun Street. The photos spiked a rumor of military coup. Military and security advisor and expert Lt. Diyaa al-Wakil said that it is only normal for such rumors to spread since there were no prior announcements about the training. (Photo by Khalid al Mousily/Reuters)

An elephant decorated with a cloth walk in the annual Perahera (street pageant) at Rajamaha viharaya Buddhist temple in Colombo, Sri Lanka September 10, 2016. (Photo by Dinuka Liyanawatte/Reuters)