{"event":"ecommerce_event","event_name":"view_item","event_category":"browse_catalog","ecommerce":{"items":[{"item_id":"UIS5083233","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"boat_in_a_stormy_sea_mid_19th_century","item_variant":"undefined"},{"item_id":"UIS5078009","item_category":"illustration","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"proprietes_des_corps_et_presentation_des_differentes_branches_de_la_physique_etudiees_mecanique_elec","item_variant":"undefined"},{"item_id":"LLM7185640","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"adam_victor_1801_66_after","item_category5":"not_balown","item_list_name":"search_results","item_name":"reflection_of_a_church_in_water_litho","item_variant":"undefined"},{"item_id":"PFH2635592","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_18th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"sir_isaac_newton_1642_1726_english_physicist_and_mathematician_engraving","item_variant":"undefined"},{"item_id":"LLM7185634","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"adam_victor_1801_66_after","item_category5":"not_balown","item_list_name":"search_results","item_name":"woman_using_a_microfilm_reader_colour_litho","item_variant":"undefined"},{"item_id":"UIS5083184","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"boy_and_a_jumping_dog_magic_lantern_slide_19th_century","item_variant":"undefined"},{"item_id":"EVB2946160","item_category":"photo","item_category2":"undetermined_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"u_s_air_force_sergeant_studies_an_reconnaissance_photo_of_a_communist_gun_position_his_reports_on_re","item_variant":"undefined"},{"item_id":"BL3264185","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"vinci_leonardo_da_1452_1519","item_category5":"not_balown","item_list_name":"search_results","item_name":"arundel_263_f_61v_f_62_note_and_diagrams_on_geometrical_optics_c_1506_8_pen_ink_on_paper","item_variant":"undefined"},{"item_id":"XIR182926","item_category":"object","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"tardieu_ambroise_1788_1841","item_category5":"balown","item_list_name":"search_results","item_name":"augustin_jean_fresnel_1788_1827_1825_engraving_b_w_photo","item_variant":"undefined"},{"item_id":"LLM2802523","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"american_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"joseph_von_fraunhofer_chromolitho","item_variant":"undefined"},{"item_id":"AVE8909511","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_hand_slides_prism_on_small_black_stand_in_front_of_another_prism_on_stand","item_variant":"undefined"},{"item_id":"UIS5083237","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"a_suitor_falling_into_a_barrel_of_water_mid_19th_century","item_variant":"undefined"},{"item_id":"UIS5065377","item_category":"object","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"optical_illusions_an_anamorphic_painting_of_a_ship_c_1744_1774","item_variant":"undefined"},{"item_id":"CCI2757913","item_category":"illustration","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"guillaume_amontons","item_variant":"undefined"},{"item_id":"UIS5083147","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"couple_with_a_baby_mid_19th_century","item_variant":"undefined"},{"item_id":"BL3264124","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"vinci_leonardo_da_1452_1519","item_category5":"not_balown","item_list_name":"search_results","item_name":"arundel_263_f_28_notes_and_geometrical_diagrams_on_optics_referring_to_alhazen_s_problem_1508_pen_in","item_variant":"undefined"},{"item_id":"BL3264153","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"vinci_leonardo_da_1452_1519","item_category5":"not_balown","item_list_name":"search_results","item_name":"arundel_263_f_95_notes_and_diagrams_on_optics_concerning_alhazen_s_problem_notes_and_diagrams_on_mec","item_variant":"undefined"},{"item_id":"XOS8985851","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"unknown_artist_18th_century","item_category5":"balown","item_list_name":"search_results","item_name":"l_optique_after_1737_oil_on_canvas","item_variant":"undefined"},{"item_id":"UIS5083230","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"a_night_view_over_a_town_mid_19th_century","item_variant":"undefined"},{"item_id":"UIG537777","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"du_maurier_george_1834_96","item_category5":"not_balown","item_list_name":"search_results","item_name":"invasion_of_privacy_by_a_seaside_camera_obscura_left_george_du_maurier_cartoon_from_punch_17_october","item_variant":"undefined"},{"item_id":"BYD3849689","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"english_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"spectrum_analysis_colour_litho","item_variant":"undefined"},{"item_id":"MEP5485463","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"portrait_de_ignazio_porro_1801_1875_opticien_italien_b_w_photo","item_variant":"undefined"},{"item_id":"JSC383751","item_category":"illustration","item_category2":"in_copyright","item_category3":"standard","item_category4":"kidner_michael_1917_2009","item_category5":"not_balown","item_list_name":"search_results","item_name":"red_1961_perspex","item_variant":"undefined"},{"item_id":"DGA1257334","item_category2":"undetermined_copyright","item_category3":"standard","item_category4":"a_dagli_orti","item_category5":"not_balown","item_list_name":"search_results","item_name":"the_ophthalmologist_s_clinic_in_the_late_1800s_advertising_for_the_american_optical_company_1942_by_","item_variant":"undefined"},{"item_id":"AVE8905264","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_three_beams_of_light_reflecting_through_a_prism","item_variant":"undefined"},{"item_id":"UDK5430100","item_category":"object","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"dave_king","item_category5":"not_balown","item_list_name":"search_results","item_name":"wet_plate_camera_in_wooden_box_lens_and_chemicals_19th_century_object","item_variant":"undefined"},{"item_id":"KES6235411","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category4":"jules_vogt","item_category5":"not_balown","item_list_name":"search_results","item_name":"switzerland_wild_company_heerbrugg_1960_b_w_photo","item_variant":"undefined"},{"item_id":"AVE8905256","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_triangular_prism_refracting_a_beam_of_light","item_variant":"undefined"},{"item_id":"BL3264152","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"vinci_leonardo_da_1452_1519","item_category5":"not_balown","item_list_name":"search_results","item_name":"arundel_263_f_95v_notes_and_diagrams_on_optics_concerning_alhazen_s_problem_two_sketches_representin","item_variant":"undefined"},{"item_id":"KES6235418","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category4":"jules_vogt","item_category5":"not_balown","item_list_name":"search_results","item_name":"switzerland_wild_company_heerbrugg_1960_b_w_photo","item_variant":"undefined"},{"item_id":"AVE8905253","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_light_being_reflected_and_refracted_through_a_small_prism","item_variant":"undefined"},{"item_id":"AVE8905268","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_light_ray_bent_as_it_passes_into_the_water","item_variant":"undefined"},{"item_id":"AVE8905272","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_demonstration_of_the_beam_of_a_light_bouncing_off_a_mirror","item_variant":"undefined"},{"item_id":"AVE8905278","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_lights_turned_off_and_lamp_turned_on_angle_of_light_beam_measured","item_variant":"undefined"},{"item_id":"AVE8905291","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_optical_equipment_moved_around_and_camera_spun_around","item_variant":"undefined"},{"item_id":"AVE8905293","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_glass_screen_moved_and_camera_repositioned_for_demonstration","item_variant":"undefined"},{"item_id":"AVE8905294","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_frosted_glass_panel_moving_towards_mirror_moves_away_as_camera_changes_angle","item_variant":"undefined"},{"item_id":"AVE8905299","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_object_in_front_of_mirror_as_screen_slides_forward_camera_moves_to_different_angle","item_variant":"undefined"},{"item_id":"UIS5083231","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"baby_asleep_in_a_cot_mid_19th_century","item_variant":"undefined"},{"item_id":"LLE821391","item_category":"illustration","item_category2":"no_copyright","item_category3":"standard","item_category4":"german_school_20th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"carl_zeiss_works_jena_germany_1914_litho","item_variant":"undefined"},{"item_id":"AVE8905122","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_beam_of_light_passing_through_and_reflect_off_a_prism","item_variant":"undefined"},{"item_id":"AVE8905136","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_demonstration_of_light_rays_bending_through_a_lens","item_variant":"undefined"},{"item_id":"AVE8905292","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_glass_screen_moving_back_and_forth_camera_repositioning","item_variant":"undefined"},{"item_id":"UIG532212","item_category2":"undetermined_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"refracting_telescope_without_a_tube_designed_by_christiaan_huyghens_c1650_from_an_edition_of_his_ope","item_variant":"undefined"},{"item_id":"DGA5184759","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"anamorphic_portrait_of_cardinal_17th_century","item_variant":"undefined"},{"item_id":"AVE8905261","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_bright_beam_of_light_reflecting_off_the_waters_surface","item_variant":"undefined"},{"item_id":"AVE8905297","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_object_moves_closer_to_mirror_glass_screen_slides_in_then_moves_aside","item_variant":"undefined"},{"item_id":"BL3264142","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"vinci_leonardo_da_1452_1519","item_category5":"not_balown","item_list_name":"search_results","item_name":"arundel_263_f_85v_diagrams_on_optics_concerning_the_caustics_of_reflection_note_and_sketch_on_mechan","item_variant":"undefined"},{"item_id":"AVE8905269","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_lamp_turned_on_beam_reflected_off_a_surface","item_variant":"undefined"},{"item_id":"AVE8905273","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_demonstration_of_the_path_of_light_bouncing_off_the_mirror","item_variant":"undefined"},{"item_id":"AVE8905276","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_reflection_of_a_beam_of_light_being_measured","item_variant":"undefined"},{"item_id":"AVE8905296","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_object_and_optical_components_on_stands_stands_slid_back_and_forth","item_variant":"undefined"},{"item_id":"AVE8905300","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_object_mirror_and_screen_aligned_screen_moves_forward_and_camera_changes_angle","item_variant":"undefined"},{"item_id":"AVE8905125","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_beams_of_light_successively_refracting_through_a_lens","item_variant":"undefined"},{"item_id":"LLM2795428","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"french_school_19th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"glass_making_colour_litho","item_variant":"undefined"},{"item_id":"AVE8905238","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_pencil_placed_in_glass_of_water_to_show_refraction_effect","item_variant":"undefined"},{"item_id":"AVE8905295","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_object_moving_between_a_glass_screen_and_concave_mirror","item_variant":"undefined"},{"item_id":"AVE8905298","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_projection_of_object_on_glass_screen_below","item_variant":"undefined"},{"item_id":"AVE8905301","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_glass_screen_moving_nearer_and_farther_from_the_mirror_camera_pans_around_object","item_variant":"undefined"},{"item_id":"AVE8905302","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_object_in_front_of_mirror_glass_screen_slides_in_and_out_camera_pans_around_the_object","item_variant":"undefined"},{"item_id":"AVE8905127","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_light_rays_passing_through_various_prisms","item_variant":"undefined"},{"item_id":"AVE8905139","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_example_of_light_rays_passing_through_a_concave_lens","item_variant":"undefined"},{"item_id":"BL3297439","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"vinci_leonardo_da_1452_1519","item_category5":"not_balown","item_list_name":"search_results","item_name":"arundel_263_f_134v_f_135_notes_and_diagrams_on_optics_concerning_alhazen_s_problem_notes_on_persepec","item_variant":"undefined"},{"item_id":"AVE8895404","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_light_beam_refracts_off_glass_in_optics_lab","item_variant":"undefined"},{"item_id":"AVE8895415","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_reflected_light_shows_ripples_and_patterns_in_water_above","item_variant":"undefined"},{"item_id":"UIS5083109","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"castle_on_a_hill_mid_19th_century","item_variant":"undefined"},{"item_id":"UIS5083134","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"fire_at_a_tailor_s_shop_mid_19th_century","item_variant":"undefined"},{"item_id":"LLM7200802","item_category":"photo","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"russian_photographer_20th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"sergey_vavilov_soviet_russian_physicist_b_w_photo","item_variant":"undefined"},{"item_id":"AVE8905226","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_beams_of_light_being_spread_out_by_concave_lens","item_variant":"undefined"},{"item_id":"UIS5083205","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"man_catching_a_butterfly_mid_19th_century","item_variant":"undefined"},{"item_id":"DGA2581360","item_category2":"undetermined_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"portrait_of_giovanni_battista_amici_modena_1786_florence_1863_italian_engineer_mathematician_and_phy","item_variant":"undefined"},{"item_id":"AVE8905219","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_light_rays_passing_through_convex_lens_and_converging_on_the_other_side","item_variant":"undefined"},{"item_id":"AVE8905223","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_example_of_beams_of_light_passing_through_a_lens","item_variant":"undefined"},{"item_id":"AVE8895409","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_light_beam_refracts_off_glass_in_optics_lab","item_variant":"undefined"},{"item_id":"AVE8895423","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_reflected_light_shows_ripples_and_patterns_in_water_above","item_variant":"undefined"},{"item_id":"UIS5068939","item_category":"object","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"spectacles_contact_lenses_franklin_style_spectacles_1720_1820","item_variant":"undefined"},{"item_id":"AVE8895372","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_frosted_glass_plate_reflects_image_metal_arrow_on_stand_in_optics_lab","item_variant":"undefined"},{"item_id":"AVE8905233","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_teacup_slowly_filled_with_water_penny_appears_at_the_bottom","item_variant":"undefined"},{"item_id":"UIS5083177","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"country_scene_mid_19th_century","item_variant":"undefined"},{"item_id":"UIG5452870","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"malibu_california_may_1964_a_scientist_at_hughes_aircraft_company_examines_a_laser_beam_that_they_ha","item_variant":"undefined"},{"item_id":"UIS5063927","item_category":"illustration","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"scene_from_baron_munchausen_munchhausen_c_1850","item_variant":"undefined"},{"item_id":"LLM7200791","item_category":"photo","item_category2":"out_of_copyright","item_category3":"standard","item_category4":"russian_photographer_20th_century","item_category5":"not_balown","item_list_name":"search_results","item_name":"dmitri_maksutov_soviet_russian_optical_engineer_and_astronomer_b_w_photo","item_variant":"undefined"},{"item_id":"DGA3685810","item_category":"illustration","item_category2":"out_of_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"refinement_of_the_darkroom_detail_plate_from_the_universal_dictionary_of_physics_and_mathematics_dic","item_variant":"undefined"},{"item_id":"AVE8895367","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_rotating_disc_mirror_and_metal_arrow_sit_on_stands_in_optics_laboratory","item_variant":"undefined"},{"item_id":"SJB8615111","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category4":"kristoffersson","item_category5":"not_balown","item_list_name":"search_results","item_name":"a_group_of_five_men_all_dressed_in_white_suits_1940s_photo","item_variant":"undefined"},{"item_id":"UIS5063285","item_category":"object","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"spectacles_contact_lenses_two_pairs_of_spectacles_lunettes_english_mid_18th_19th_century","item_variant":"undefined"},{"item_id":"DGC3557548","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"family_scene_with_grandma_using_a_stereoscope_c_1900_photo","item_variant":"undefined"},{"item_id":"AVE8895373","item_category":"footage","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"1960s_frosted_glass_plate_falls_away_from_mirror_and_metal_arrow_on_stands_in_optics_lab","item_variant":"undefined"},{"item_id":"PFH4072274","item_category2":"no_copyright","item_category3":"standard","item_category4":"david_henley","item_category5":"not_balown","item_list_name":"search_results","item_name":"austria_sir_isaac_newton_1642_1726_english_physicist_and_mathematician_natural_history_museum_naturh","item_variant":"undefined"},{"item_id":"BNS6352292","item_category":"photo","item_category2":"no_copyright","item_category3":"standard","item_category5":"not_balown","item_list_name":"search_results","item_name":"w_guilbault_optician_c_1900_silver_gelatin_print","item_variant":"undefined"}]}}

{"event":"custom_event","event_name":"view_search_result","event_category":"browse_catalog","keyword":"optics","search_type":"standard","search_bridgeman_artists":"false","search_mode":"automatic","search_zero_result":"false","search_results":1049,"search_results_page_number":7}