This week Formafantasma unveiled experimental lighting designs at Milan design week and Cerith Wyn Evans illuminated the Tate Britain with neon scribbles. Both feature in this week's Pinterest roundup of popular lighting installations.

Elmetto by Formafantasma
Amsterdam-based design duo Formafantasma presented a series of lighting designs and experiments in Milan this week, including golden hoops that project circles of light and slender beams that create colourful refractions.
Find out more about Elmetto ?

Forms in Space... by Light (in Time) by Cerith Wyn Evans
Also this week, Welsh artist Cerith Wyn Evans suspended almost two kilometres of neon lighting shaped into sharp lines and sweeping forms in the Tate Britain's Duveen Galleries.
Find out more about Forms in Space... by Light (in Time) ?
Heartbeat by Charles Pétillon
A giant cloud of balloons was installed under the roof of the 19th-century Market Building in London's Covent Garden by French artist Charles Pétillon. A gently pulsating white light, designed to mimic a heartbeat, illuminated the structure from within.
Find out more about Heartbeat ?

Water Balloon by Torafu Architects
Illuminated glass droplets full of bubbles appeared to fall from the ceiling of a Tokyo gallery in Torafu Architects' Water Balloon installation. Each of the 36 hand-blown bulbs pulsated with light in the dark space.
Find out more about Water Balloon ?

Sensual Wave by Marion Moustey and Alexandre Arcens
Architects Mar...